How to Generate a HAR File in Chrome, IE, Firefox, and Safari

This article shows how to Generate a HAR File in Chrome, IE, Firefox, and Safari. Microsoft Edge (Chromium) is almost the same as Google Chrome.

HAR files are used to gather performance data from the end-users' web browser. It will capture objects, and response calls that a webpage generates.

Additional metrics that can be gathered by HAR are:

  • Length of time that it takes to connect to the server
  • Length of time to gather DNS information
  • Length of time that it takes to transfer assets from the server to the browser
  • Length of time that an object takes to be requested

As various ways HAR files are used, Palo Alto Network's support engineers might require you to capture data for troubleshooting purposes. 

How to generate a HAR and log file in Chrome

  • Open Google Chrome.
  • In Chrome, go to the webpage in question.
  • Select the  Chrome menu > More Tools > Developer Tools
  • Select the  Networks tab.
  • Within the  Networks tab , select  Preserve log  option.
  • Record log by selecting the  red circle  at the top left of the  Networks tab.
  • Refresh the page and allow  Chrome  to record browser-website interaction. 

har file safari

  • Go back to the  Networks tab  and right click element. Select " Save HAR with content ".
  • Upload  HAR  and  log  files to the support ticket.

How to generate a HAR and log file in Firefox

  • Open  Firefox .
  • In  Firefox , go to the webpage in question.
  • Select the  Firefox menu > Web Developer > Network.
  • In the center of the  Networks tab  select refresh .
  • Refresh the page and allow  Firefox  to record the browser-website interaction. 
  • Once the page is loaded, right click and " Save All As HAR ".
  • Select the  Console tab  and right-click on in the console box.  Select all  and  Copy Message  
  • Copy log messages to the preferred text editor.
  • Upload the  HAR  and  log  files to the support ticket.

How to generate a HAR and log file in Safari

  • Open  Safari .
  • In  Safari , go to the webpage in question.
  • Enable Developers Tool:  Safari  >  Preferences  >  Advance  > Click  Show Develop menu in menu bar
  • Select  Develop  in menu >  Show Web Inspector  > Select  Network tab
  • Refresh the page and allow  Safari  to record the browser-website interaction. 
  • Once the page is loaded, click on  Export  on the top right in the window of the  Network tab.
  • Select the Console tab  and screen capture the errors.
  • Upload the  HAR and console screenshot  files to the support ticket.

How to generate a HAR and log file in Internet Explorer (IE)

  • In  IE , go to the webpage in question.
  • To open  Developers Tool, pr ess the F12 key on your keyboard, or you may find the  Developers Tool  in the menu.
  • In the  Developers Tool  menu >  Network  panel and then deselect the  Clear entries on navigate  option. (Default)
  • Select  Start Profiling Session/Start Capture.
  • Refresh the page and allow  IE  to record the browser-website interaction. 
  • Once the page is loaded, click on  Export  as HAR/Export capture traffic icon  and save
  • Click on the  Console  tab and look for any errors/warnings reported. If errors are shown, please  right-click  on the console errors and select  Copy all.  
  • Upload the  HAR  and  log  files to the support ticket.
  • Almost the same as Google Chrome.

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For technical inquires, please include the name of the hmh platform (eg: ed, thinkcentral, sam, hrw), creating a har file in safari, har (http archive) is a file format used by several http session tools to export the captured data. this can be highly useful in troubleshooting complex issues by obtaining additional information about the network requests that are generated in the browser while an issue occurs. consult the remainder of this technical note for instructions on safari. may 3, 2023 • knowledge, information.

  • content of the pages you downloaded while recording
  • your cookies, which will allow anyone with the HAR file to impersonate the account
  • all the information that you submitted while recording
  • Open Safari and navigate to the page where the issue is occurring.  Note: This is tab and window dependent, so if the issue occurs in a new tab or window, the HAR recording needs to be done in that new tab or window.
  • If the Develop menu does not display in the menu bar, click the Safari menu and click Preferences .
  • Click Advanced , then select  Show Develop Menu in the Menu Bar.
  • Click the Network tab and reproduce the issue that was being experienced while the network requests are being recorded.  Note: Do not close the Network tab.  This will end recording and the needed HAR file will be lost.
  • Once the issue has been reproduced, click the Export icon and save the file to the computer.
  • Attach the HAR file to the email to send to Support. Note:  It may be necessary to ZIP the HAR log first as it is possible the HAR log could be quite large.

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Generate a HAR Capture on an iOS Device

Nov 20, 2023 • knowledge article, information.

  • On the iOS Device, go to  Settings  >  Safari  >  Advanced  >  Enable Web Inspector.
  • Connect the iOS device to the Mac computer using a cable and make sure the iOS device is recognized.
  • On the iOS device, launch Safari and reproduce the issue.
  • Using the Mac computer, launch Safari, then click on  Develop > Select the relevant iPad   > Click on the session  and that will open the developer tools.
  • From here, export the HAR file.
  • Upload the HAR file on the Support Portal to sanitize the HTTP traces automatically.  Refer to How to Sanitize a HTTP Trace File Automatically .

har file safari

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HAR  is the short form for  HTTP Archive format , which tracks all the logging of web browser's interaction with a site.

HAR files can be a requirement for troubleshooting issues specifically for problems listed below:

  • Performance Issue: slow page load, timeout when performing certain task
  • Page rendering : incorrect page format, missing information

First line troubleshooting can be conducted by following this guide. Providing these information to the support team will help expedite the troubleshooting process.

Before you begin

Do take note of the Supported Platforms  for the supported browser types.

It is highly recommended to generate multiple HAR files for comparison. Below are guidelines for effective information gathering:

  • Generate a HAR file for an unaffected page (without performance issue or page rendering issues). Example. Dashboard, Issue View, Issue Search and Project page.
  • Generate a HAR file for an affected page . Generate multiple times to get the better average and capture the consistent timing

  Below is the HAR files generated depending on the browser variant you are using. 

It is recommended to use Chrome to generate HAR files because it natively provides the Developer Tools to facilitate this. To learn more about the Chrome's developer tools, you can head towards  this link .

Chrome is bundled with a set of  Developer Tools  as covered in that link.

JavaScript Errors

Look in the  Chrome Console  for any JavaScript errors. 

Network Issues

To diagnose support problems, the network tab can be used:

  • Open up Chrome and enable the  Developer Tools .
  • Select the network tab.
  • Enable preserve log
  • Load the page with the problem.
  • Wait until it has finished loading.
  • Review it for any errors, referencing  HTTP/1.1 Status Codes  for information on what those errors mean.

Atlassian Support may also request a browser debug log. If this information has not been requested, you can skip to "Providing Information to Support"

To enable the extra browser log:

  • Start up the browser with the parameters " --enable-logging --v=1" ( This article provides instructions for major platforms )
  • There will be a file call "chrome_debug.log" generated in the  Chrome user default Location .

Providing Information to Support

  • Using  Keyboard Shortcut  (⌘⌥I on OS X, Ctrl + Shift + i on Linux, F12 on Windows)

Chrome Menu

  • Navigate to the  Network  tab on the  Development Tool
  • Check  Disable Cache   option to prevent caching of resources for this specific page.

Refresh  the page to start capturing the traffic between the browser to the server.

 Please capture a full page load so we can see the requests made prior to the problem we're analyzing.

har file safari

  • Before sending the HAR file to Atlassian, ensure to remove/censor any sensitive information using a text editor (i.e. remove passwords, secrets, etc).

Firefox comes with an embedded set of developer tools that you can use for troubleshooting.

JavaScript Errors

Look in the console for any JavaScript errors.

Access the Network tab within the Firefox Developer Tools to check for any network errors. For further info on HTTP codes, please take a look through  HTTP/1.1 Status Codes .

  • Go to Tools > Web Developer > Network
  • Click the cog icon, then Persist logs
  • Note: Please capture a full page load so we can see the requests made prior to the problem we're analyzing.
  • Complete the steps that trigger or demonstrate your issue.

har file safari

It can also be helpful to obtain an export of the console.

Internet   Explorer / Edge

Internet Explorer supports the  Developer Toolbar . Additionally,  Fiddler  is a third-party application that's often used for debugging browser problems.

Take a look through the Microsoft  Using the F12 Tools Console to View Errors and Status   KB to see how to identify JavaScript errors.

Microsoft's  Using Windows Internet Explorer Developer Tools Network Capture  KB can be used to identify how to diagnose network issues. For further info on HTTP codes, please take a look through  HTTP/1.1 Status Codes .

Occasionally, we'll need to ask for a copy of that data so we can review it. To do so, please go through the following: 

  • If using IE 9 please follow the steps as covered in  IE9 Developer Tools: Network Tab  to save an XML file and provide it to us.
  • If using IE 11 please follow the steps as covered in  Analyzing your webpage's network traffic , and use  Export captured traffic .

Microsoft Edge

Microsoft Edge has an inbuilt   Developer tools .

JavaScript Issues

Look into the console tab for any JavaScript errors.

  • Open up the inbuilt   Developer tools .

Go to  Developer tools using the  F12 keyboard shortcut

Refresh  the page to start capturing the traffic between the browser to the server. 

  • Click on  Export as HAR  (Floppy button next to the stop button on the Developer Tools) followed by Save As... to save the HAR file.

Safari comes with its own  Safari Web Development Tools  as described in that link.

Apple have put together a  Using the Error Console  guide that will detail how to find JavaScript errors.

Take a look through the  Safari Web Inspector Guide  documentation and follow the details there to look for any network errors. The   HTTP/1.1 Status Codes  is an excellent resource for identifying what those HTTP status codes mean.

Providing HAR file to Support

  • Go to the Network tab of the Web Inspector.
  • Make sure the checkbox for Disable Caches is ticked.
  • Click on Export (button is near the Disable Caches checkbox).

Providing Timeline Recording to Support

  • Go to  Developer tools and choose " Start Timeline Recording ".
  • Select timeline all instruments to record .
  • Click on  Save. The circle with the down arrow.

Visualizing Timeline Recordings

In order to visualize Timeline Recordings generate by Safari you need to:

  • go to  Safari > Preferences > Advanced.
  • Mark the checkbox "Show Develop menu in menu bar". 
  • That will enable the Develop menu on which you can find "Show Web Inspector".
  • At the top of the Web Inspector area, click "Timelines" and then "Import" on the right side.

Analyzing Web Requests

The steps taken to analyze the Web Requests captured by HAR file varies depending on the troubleshooting Performance Issue or Page Rendering issue.

A common tool that is used to view the HAR files generated is  HAR Viewer  which is available as a Web Application.

Troubleshooting Performance Issues

The interested information for Performance issue is the load time and which request is causing the delay on the browser to serve the content to the user. So an understanding towards the definitions used for Web Request is required for effective troubleshooting, see below:

The below is extracted from HAR file loaded in  HAR Viewer  or Google's tool,  HAR Analyzer .

Highlighting any web request after loading the HAR file will reveal the information below:

har file safari

Request start time since the beginning

The highlighted request is called after how long from the initial request. Example: Like below +6.32s means the current request is being called after 6.32 seconds after the initial request (Most of the time HTML request as the initial one)

har file safari

Amount of time waiting for the Server to respond. If this value is high, it could mean:

  • If the time waiting is low locally then the networks between your client and the server are the problem. The network traversal could be hindered by any number of things. There are a lot of points between clients and servers and each one has its own connection limitations and could cause a problem. The simplest method to test reducing this is to put your application on another host and see if the time waiting improves.
  • That the server is busy or suffering a performance issue.Below we can see that there is around 2 seconds wait time from the server; this scenario was due to a complex jql query:

har file safari

Typically when in this situation, cross check for any heavy running tasks (Example : Creating Backup, Reindex).

If this is always seen during a specific time of the day, record the time of occurrence and create support ticket at  support.atlassian.com  for assistance on identifying the root cause.

This one is the amount of time used for the server to transfer the required information to the client. Typically this is the where we detect is a network issue. See below for an example:

har file safari

This example above has a 1.6 seconds wait time, which took most of the delay for the request to complete.

DOM loaded means that all the HTML has been received and parsed by the browser into the DOM tree which can now be manipulated.

It occurs before the page has been fully rendered (as external resources may have not yet fully downloaded - including images, CSS, JavaScript and any other linked resources).

 Do not confuse with  onload  event:

The onload event occurs when an object has been loaded. onload is most often used within the <body> element to execute a script once a web page has completely loaded all content (including images, script files, CSS files, etc.).

The onload event can be used to check the visitor's browser type and browser version, and load the proper version of the web page based on the information.

Ref: http://www.w3schools.com/jsref/event_onload.asp

Page Loaded

Total time taken for the page to be fully loaded. (Inclusive of AJAX call or any REST call from javascript to populate data on external server: Example, google analytics)

It does not means that the page is white without any content until the page is fully loaded, the page normally will show after the onload event, after that it will populate the information from the external call. Such as Dashboard Gadget when loading:

har file safari

Is you have external resources to populate the page (Gadgets, external links) It could take a longer time to completely load the page, however it is not depending on the performance of the server but rather the speed to handle the request from other site/server.

The size of the request being served plays a role on performance issue as well, for better understanding on how it contributes to delay:

How long will it take to serve the 2.4MB data? A calculation is shown below:

3Mbps = Approximate 0.375MBps (note: B = byte, b = bit)

In order to get 2.4MB, you will need:

2.4MB/0.375MBps = 6.4 seconds

And this depends on the throughput available, generally can run a Speed Test and check the throughput to server nearest to the hosting datacenter.

A similar view is obtained by viewing the Network tab on respective browser types listed above. 

Steps to analyse is very straight forward if the above definition is clearly understood:

  • Search for the delay responding request (typically the longest bar viewing the total web requests)
  • Identify what is the longest waiting time, and how long it waited
  • Check what is the main contributor towards the delay (Blocking, Waiting or Receiving)
  • Run consistency checking by reloading the page multiple time
  • Seek for assistance from the Support team with the information captured if identifying the Server is contributing the delay. For other issues, such as network, it is faster to reach out directly to the ISP or internal hosting team for assistance. The information gathered should be suffice to show the observation.

Troubleshooting Rendering Issue

In common cases, when a page fails to render correctly, the cause should be logged in the  Console tab from the  Developer Tools . If no reason is logged, try disabling the browser cache by checking the box next to  Disable Cache . This will force the browser to render the page from scratch instead of using cached data. Similarly the  status code from the HAR file can also help to identify which request could have caused the issue.

Example for some error message seen in Console tab accompany the code of 404 Bad Request :

This is found from the bug  JRA-42216 - Getting issue details... STATUS  which is also a page rendering issue

It is important to be able to identify the status code from the HAR files generated as well. Below is few of the common example:

  • 200 - Success
  • 404 - Page not found / Bad Request
  • 401 - Unauthorized
  • 403 - Forbidden 
  • 304 - Not Modified (Content is cached)
  • 500 - Internal Server Error

For the definition of the error, you can refer to the  HTTP/1.1 Status Code Definition  page for detail.

After capturing the consistent behaviour, provide this information to the support team together with the steps taken for the Support team to work on potential cause behind the observation.

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How to Use HAR Files to Analyze Performance Over Time

When I consider the performance of a website, several things come to mind. I think about looking at the requests of a page, understanding what resources are being loaded, and how long these resources take to be available to users.

Chrome Network tab

The network tab will give you a table containing all assets loaded on the page. It will also show you relevant information about the origin of those assets (domain, HTTP status code, size), who initiated the request, and the order in which they were loaded in a waterfall representation.

You can add more information to this table by right-clicking one of the table headers and choosing other columns.

The size, time and waterfall columns will be crucial to understanding the performance of a page. The size value will present the gzipped size of the resource (when applicable), while the time column shows the total duration from the start of the request to the receipt of the final byte in the response.

Last, but not least, the waterfall column demonstrates when the asset is loaded along with the other requests.

Performance improvements are noticeable by changes in your code/environment. So how do we keep track of what is being analyzed by the Network tab? By exporting the page in HAR format.

What is a HAR file?

A HAR (short for HTTP Archive) file is a JSON file containing all information about a browser’s interactions with a page. It will contain the HTML document and its respective JS and CSS files.

Along with this content, a HAR file will also contain all headers’ information and the browser metadata (that is, the time of each request).

It is important to mention here that cookies and form data will also be logged in the file, so be careful to not include sensitive information (personal details, passwords, credit card numbers) while auditing pages.

Also, you should audit pages in private windows, which avoids browser extensions. It's important to avoid a browser’s extensions since they may modify the loading times of a page.

Generating HAR files

Google chrome.

  • Close all incognito windows in Google Chrome.
  • Open a new incognito window in Google Chrome.
  • Go to View > Developer > Developers Tools.
  • In the Developer Tools panel, choose the Network tab.
  • Check the Preserve Log and Disable cache checkboxes to record all interactions.
  • Refresh the page.
  • Click the Export HAR (down arrow icon) to export the HAR file.
  • Save the HAR file.
  • Close all private windows in Firefox.
  • Open a new private window in Firefox.
  • Go to Tools > Developer > Network or ctrl-shift-E.
  • In the Cog icon (upper right side of the page), choose Save All As Har.

Firefox Network tab

  • Ensure that Show Develop menu in menu bar checkbox is checked under Safari > Preferences > Advanced.
  • Choose File > Open New Private Window.
  • Visit the web page where the issue occurs.
  • Choose Develop > Show Web Inspector. The Web Inspector window appears.
  • Click Export on the upper right side of the pane.

Safari Network tab

Reading HAR files

Once you have a HAR file, you can try a few HAR viewers online. My personal favourite is the one created by Jan Odavarko .

HAR Viewer

What I like about this viewer in particular is the fact you can have multiple files open at the same time, which makes it easier to compare them.

Using HAR files to analyze the performance of a page

HAR files can be useful to collect information about the assets of a page. Since you have detailed information about their content, you can compare what has improved (or in some cases, not improved) after a new feature is launched or a redesign is completed, for example.

During my workflow, I like to keep track of the final size/time values of a few pages of the product that I am working on.

More information

  • Measure Resource Loading Times
  • HAR Viewer source code

Also posted on my blog . If you like this content, follow me on Twitter and GitHub . Cover photo by William Daigneault/Unsplash

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Generate and Analyze HAR Files

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Auth0 Product Lifecycle

A HAR (HTTP Archive) file is a JSON-formatted log of a web browser's interactions with a web server.

A HAR file shows the sequence of redirects that happen during a login transaction, which makes it an excellent resource for debugging authentication issues. Including a HAR file in your support requests can help accelerate the troubleshooting process.

Before sharing a HAR file with anyone (including Auth0), ensure that you remove or obfuscate all sensitive data, such as:

Confidential user information

Personal identifiable information (PII)

Confidential application information

To learn more, read the following articles on Auth0 Community :

Sanitizing HTTP Traces

How to Sanitize an HTTP Trace File Automatically

How to Manually Redact Sensitive Information

HAR File is Too Large to Upload to the Support Case

Generate HAR files

You can generate a HAR file within most web browsers using the built-in developer or inspector tools.

Google Chrome

Close all incognito windows in Google Chrome.

Open a new incognito window in Google Chrome.

Go to View > Developer > Developers Tools .

In the Developer Tools pane, choose the Network tab.

Check the Preserve Log checkbox to record all interactions.

Visit the page and complete the steps that trigger the issue.

Choose the Network tab.

Click the down arrow to export the HAR file.

Save the HAR file.

Ensure that Show Develop menu in menu bar checkbox is checked under Safari > Preferences > Advanced .

Choose File > Open New Private Window .

Choose Show Web Inspector in the Developer menu, then navigate to the Network tab.

To the right of All near the top-left of the Web Inspector, click the Filter button and choose Preserve Log.

Visit the web page where the issue occurs.

Choose Develop > Show Web Inspector . The Web Inspector window appears.

Complete the steps on the page that trigger the issue.

Select the Network tab.

Click Export on the upper right side of the pane.

Close all private windows in Firefox.

Open a new private window in Firefox.

Go to Tools > Developer > Network ( Ctrl + Shift + E ).

Click the Network tab and choose Persist Logs.

Choose the Network tab and right click and then select Save All As Har .

Microsoft Edge

Close all InPrivate windows in Microsoft Edge.

Open a new InPrivate window ( Ctrl + Shift + N ).

Go to Settings and more (the ... icon) then choose More Tools > Developer Tools .

Start a profiling session on the Network tab of the Developer Tools toolbar.

Select Export as HAR ( Ctrl + S ) and save the HAR file.

Internet Explorer

Close all InPrivate windows in Internet Explorer.

Open a new InPrivate window in Internet Explorer ( Ctrl + Shift + P ).

Go to Tools > F12 Developer Options > Network .

Ensure Clear entries on navigate is switched off.

Choose the Network tab and select Export as HAR ( Ctrl + S ).

Analyze HAR files

Auth0 does not use and does not endorse using any third-party application, tool, or software to analyze HAR files.

After you have sanitized a HAR file, you can open it in a text-editor or browser to view the recorded events.

See  the Monitoring page  for more details on each of the log events that can help you troubleshoot issues.

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IMPORTANT: Please note that HAR files contain sensitive clear text data including content of pages while recording, such as user names, passwords, keys, etc, and should only be shared with trusted recipients via secure channels such as  https://cis.citrix.com.  Sharing files via email is not recommended. Remove any sensitive information from the file before you send it to Citrix Support. 1. Open the HAR file in a text editor 2. Identify and replace all sensitive information captured in the HAR file with a placeholder 3. Save HAR File  

The following instructions provide the steps to generate a HAR file for troubleshooting.

  • Open your browser.
  • Press  Option + Command + i to view the page.
  • Select the Network tab.
  • Reproduce the error
  • Select  Export as HAR File .
  • Provide the saved HAR file to technical support.

Additional Resources

  • CTX275204 -  Creating a HAR file from your browser to share with support
  • CTX275203  -  Create a HAR file for Chrome
  • CTX275208  -  Create a HAR file for Edge
  • CTX275207  -  Create a HAR file for Firefox
  • CTX275206  -  Create a HAR file for Internet Explorer

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Capturing a HAR File

Har files from your browser can provide support with value information when attempting to troubleshoot issues aug 29, 2023 • how to, information, article content.

Note : It would be considered best practice to clear your browser cache before attempting to capture a HAR file. If you have not already done so, please press the following three keys on your keyboard:  Ctrl, Shift, Delete From the new menu that opens, ensure the time range is set to Everything or All time and select the clear  or delete  option. Once this is finished, please proceed with the steps below:

Capturing a HAR File in Google Chrome or Microsoft Edge:

User-added image

Capturing a HAR File in Firefox:

  • In Firefox, close all windows/tabs you have open, except for the one you will use to replicate your problem. Note: This is tab and window dependent, so if the issue occurs in a new tab or window, the HAR recording needs to be done in that new tab or window.

User-added image

  • Select More Tools >> Web Developer Tools . The Developer Tools window opens as a docked panel at the side or bottom of Firefox.
  • Select the Network tab   
  • Select the Settings (sun icon) in the top right of this panel and choose Persist logs .
  • Refresh the page and reproduce the problem while the capture is running.
  • After you successfully reproduce the issue, right-click any row of the activity pane and select Save all as HAR . Name your file and save it in a location on your system. 
  • Access  https://skillsoft.sendsafely.com/dropzone/secureupload  to upload your file. You can enter your case number and email address, then drag or browse for your file. Once the file is ready, select the Submit button, and let your Skillsoft Representative know that you have successfully uploaded your file for their review. 

User-added image

Capturing a HAR File in Safari:

  • In Safari, first ensure your Develop menu is available by navigating to the menu bar and selecting Preferences >> Advanced : Show Develop menu in menu bar
  • Go to the page where you are experiencing the problem.
  • In the menu bar at the top, click Develop and select Show Web Inspector .
  • Click the Console tab and select Preserve Log .
  • Go back to the Network tab.
  • After you successfully reproduce the issue, right-click any row of the activity pane and select Export HAR. Name your file and save it in a location on your system. 
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Your Questions About HAR Files Answered

HAR Files provide a snapshot of the interactions or calls made between a web browser and a web server. Here’s a closer look at what data they contain, why they’re useful, and how to use them.

  • Unified Fast File and Object

HAR Files

Jun 12, 2023

image_pdf

In web development, there are a few tools that developers can use to troubleshoot, optimize, and debug sites. One of those is an HTTP Archive (HAR) File, a file that provides a snapshot of the interactions or calls made between a web browser and a web server. Here’s a closer look at what data they contain, why they’re useful, and how to use them.

What Is a HAR File?

Websites are hosted on web servers, which contain all the data for that website: data such as images, scripts, and code. When a user accesses a site via a browser, a series of calls are made with each command, and the server responds to each by returning the requested data, which is then displayed in the browser.

This “conversation” between the web browser and web server can contain valuable information about how a site is functioning. HTTP Archive Files, or HAR files, are files that provide a log of browser activities, or network requests, that occur while accessing a website—whether it’s Firefox, Chrome, Safari, etc. 

What Are the Contents of a HAR File?

A HAR file uses a nested data structure that includes all of the elements of activity: 

  • Network traffic
  • Cookies and cached data
  • Request and response data, and any status codes
  • Request and response times, such as the duration of a request, DNS and SSL times, time to initiate, and time to receive
  • Site headers
  • Content called up and its payload, such as images, text, web scripts, and video
  • Any errors that occur, such as server errors

HTTP Archive (HAR) Files Are JSON Logs

In web development, different programming languages and syntaxes are used for different functions. JSON, or JavaScript Object Notation, is a data-interchange format used in front-end programming. JSON is the standard format for HTTP Archive Files, which makes it easy to open and view in any text editor application. It’s not just easy for computers to parse and read—it’s human-readable, too, although there are tools, mentioned below, that can simplify these files.

Why Do HAR Files Exist?

HAR files exist to analyze network traffic and site communications between a browser and web server. They exist because browsers allow users to record site activity, then export them for analysis. Once the “record” option is toggled on in the browser, all traffic and interactions will be saved in the file.

Why Are HAR Files Useful?

HAR files are useful for web developers, site analysts, security teams, and compliance audits. HTTP Archive files are beneficial because they enable fast, easy analysis of a site for a variety of functions and outputs.

Benefits of HAR Files in Development and Debugging

A few examples of the benefits of HAR files include:

  • Analysis and optimization of a site’s performance. Being able to review and analyze an entire HTTP conversation with a website helps developers identify bottlenecks, diagnose errors, and improve page loading times.
  • Security analysis, compliance, and auditing. The report makes it easy for web teams to provide evidence of security and compliance.
  • Debugging and issue diagnosis
  • Locating broken links, such as 404s; 4xx or 5xx status codes; and errors caused by misconfigurations
  • Identifying large files that may be slowing load times that could be compressed to make the site more efficient
  • Enabling collaboration or support teams to jump in and help on a site. Page structure and load order give developers new to a project a better sense of how a page is built, including any embedded stylesheets (CSS) or scripts.

Examples of Use

  • Compliance. Say a healthcare organization has a patient portal which is subject to regulatory standards. HAR files can be used to record network activity to report out adherence to compliance standards.
  • Penetration testing or white hat hacking. A web development agency may use a HAR file to examine network traffic for security analysis, identifying any suspicious activity or potential site vulnerabilities.

Who Accesses or Uses HAR Files?

How web developers use har files.

Web developers may use HAR files when they want a fast, behind-the-scenes snapshot of how a site is performing, or to quickly identify where something may be off or need fine-tuning for better performance.

HAR Files Help Quality Assurance Engineers

QA engineers can use HAR files to uplevel many aspects of their roles, such as performance testing, debugging, and narrowing down the causes of issues that may affect user experience or the integrity of a site. The file then helps them communicate those issues with developers for faster fixes.

How Cybersecurity Teams Use HAR Files

Whether it’s proactive, by identifying potential issues in anomalies, or reactive, like investigating malicious activity, HAR files are incredibly useful to cybersecurity teams. By thoroughly examining site requests and responses, cybersecurity professionals can spot unexpected activity or anomalies in them.

Generating and Accessing HAR Files in Different Browsers

In general, the steps for recording and generating a HAR file are consistent across browsers. It may vary depending on the browser, but typically it involves accessing developer tools through a right-click action. 

How to View the Contents of a HAR File

Steps for analyzing har files in chrome.

  • In Chrome, right-click on a page and select Inspect to access Developer Tools.
  • Select Network and check the Preserve log box, and click Record . Interact with the site as needed.
  • Right-click again and select Save all as HAR to save the file.

Steps for Analyzing in Safari

  • In Safari, select Preferences , then Advanced , then Show Develop to access Developer Tools.
  • Select the Network or Performance tab, turn on record, or the network capture feature, and interact with the site as needed.
  • Stop the recording and save the HAR file.

Steps for Analyzing in Firefox

  • In Firefox, right-click on a page and select Inspect Element to access Developer Tools.
  • Select the Network tab, enable Persist Logs , and interact with the site.
  • Right-click again and select Save All as HAR to save the file.

Tips and Tricks 

Despite being human-readable and easy for computers to parse, the reality is that HAR files contain a lot of data. They can be complex, so having the right tools to visualize them can make faster work of analysis. You’re better off using a tool that provides a user interface, such as a browser extension or dedicated HAR tool.

Best Practices 

A couple of best practices to make working with HAR files easy, collaborative, and secure include:

  • Obfuscating sensitive data such as logins and passwords for security purposes
  • Automating HAR file parsing and analysis. Speed up insights from these files with various tools or scripts to more easily incorporate HAR file analysis into web development workflows.

Free and Open Source HAR File Tools

HAR file tools can make a big difference in how quickly and easily you can analyze them. Tools can offer search, sorting, filtering, navigation, and other functions. Here are a few options:

  • HAR Viewer : A free web-based tool
  • HAR Extractor: A free tool with an API that allows you to extract key data
  • HAR Analyzer: Another free tool with its own CLI and ability to generate reports

HAR files are an excellent addition to the toolbox and workflow of developers, QA analysts, and cybersecurity professionals. Knowing what you can glean from these files, how to access them, and the best tools to streamline analysis will help you incorporate these valuable resources into any web workflow, resulting in better performance, user experience, and security.

Written By: Pure Storage

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har file safari

Last updated Dec 12, 2022

What Is a HAR File?

Save a har file.

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HAR 1.png

Chrome and Edge

  • You might need to drag the borders of the Developer tools panel to be able to access your space. 
  • You'll see the Developer tools panel populate rows of data as it's recording.
  • If your space won't load at all (for example, if it's showing the Oops error message), reload your browser page while you're recording.

In the left panel, a user is setting the start location. In the right panel, rows of data are populating as the action is recorded.

  • After you've completed attempting the action that's not working, follow the steps in the section below to stop recording.

The three dots icon opens a menu that contains the More tools option, which opens a menu containing the Developer tools option.

  • Complete steps 4-5 above to record the action that's not working.
  • Click the record button again to stop recording.

On the right side of the row of icons on the Network tab is a downward facing arrow with a line underneath it.

  • If this doesn't do anything, you might need to enable the Develop menu. To do so, select the Safari menu > Preferences. Go to the Advanced tab and select the Show Develop menu in menu bar checkbox.

safari network tab.png

  • If the Export button isn't enabled, refresh the page with the Network panel open.
  • To start generating your HAR file, press Control + Shift + E to open the Network Monitor.
  • Complete steps 4-5 above to record the action that's not working. The recording starts automatically when you start taking actions in the browser.
  • Right-click anywhere in the File column and select Save all as Har.
  • Save the HAR file in a place that you can easily remember. Give the file a name that explains what you recorded, and make sure the file suffix remains .har.

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har file safari

Articles How do I capture console and HAR logs or mobile phone screen recordings to troubleshoot browser-related issues with the Duo Prompt?

Explore other articles on this topic.

How do I capture console and HAR logs or mobile phone screen recordings to troubleshoot browser-related issues with the Duo Prompt?

Kb faq: a duo security knowledge base article dec 5, 2023 • knowledge, information.

If you experience failures in-browser such as the Duo Prompt not loading completely, Duo Support may ask for a HAR capture and/or console logs to help diagnose the issue. The HAR capture will record requests and responses between your browser and the site you are accessing and could help to identify the root causes of the issues you are experiencing. If the issue occurs on a mobile device, Duo Support may ask for a screen recording to demonstrate the issue. Below are steps for capturing these logs from Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Internet Explorer 11, and Edge. Notes for sensitive information:

  • If the issue you are troubleshooting includes password authentication, set a temporary password or make sure all instances of the password are removed from the HAR file before you send it to Duo Support .
  • Make sure to also remove any other sensitive information, such as session cookies or the Secret Key (SKEY) of a Duo application.
  • In Chrome, go to the page where you are experiencing the error.
  • At the top-right of your browser window, click the Chrome menu (⋮).
  • Select More   Tools > Developer Tools . The Developer Tools window opens as a docked panel at the side or bottom of Chrome. 
  • Click the  Network  tab.
  • Select  Preserve log .
  • You will see a red circle at the top left of the  Network  tab. This means the capture has started. If the circle is black, click the black circle to start recording activity in your browser.
  • Refresh the page and reproduce the problem while the capture is running.
  • After you successfully reproduce the issue, right-click on any row of the activity pane in the  Network , and click  Save all as HAR with Content .
  • Save the HAR file.
  • Select the  Console  tab.
  • Right-click anywhere in the console and select  "Save as..." .
  • Name the log file "console-log.txt".
  • Send both files to Duo Support as a reply to your open support case. 
  • In Firefox, go to the page where you are experiencing trouble.
  • Click the Firefox menu (Three horizontal parallel lines) at the top-right of your browser window.
  • Select  Web Developer > Network .
  • The Developer Tools window opens as a docked panel at the side or bottom of Firefox.
  • Select  Persist logs .
  • Firefox typically takes a few seconds to prepare the download. A slight delay on this step is normal.
  • Right-click any row and select  Select all .
  • Paste the content in a text file and name it "console-log.txt".
  • In Safari, go to the page where you are experiencing trouble.
  • In the menu bar at the top, click  Develop  and select  Show Web Inspector .
  • Click  Preserve Log .
  • Click the  Console  tab and select  Preserve Log .
  • Go back to the  Network  tab.
  •  Refresh the page and reproduce the problem while the capture is running.
  • Once you have reproduced the issue, select  Export .
  • Click the  Console  tab.
  • Send both files to Duo Support as a reply to your open support case.

Internet Explorer 11 (IE 11)

  • In Internet Explorer, go to the page where you are experiencing trouble.
  • Click the gear icon in the top right.
  • Select  F12 Developer Tools .
  • Clear the  Clear entries on navigate  option, which is selected by default. The icon looks like a blue arrow with a red X.
  • The green play button ( Start Profiling Session ), should be selected by default. This means the capture function is running.
  • Refresh the page and reproduce the problem while the capture function is running.
  • Once you have reproduced the issue, click the  Export as HAR  icon. The icon looks like a floppy disk.
  • Right-click any row and select  Copy all.
  • Paste the content in a text file and name it "console-log.txt".
  • Send both files to Duo Support as a reply to your open support case.
  • In Opera, go to the page where the HTTP(s) URL Sequence needs to be monitored.
  • At the top-left of your browser window, click the Opera menu icon and select Developer > Developer Tools , or press the F12 button. The Developer Tools window opens as a docked panel at the side or bottom of Opera.
  • Click the Network tab.
  • You will see a red circle on the top-left side of the Network tab. This means the capture has started. If the circle is black, click the black circle to start the recording activity in your browser.
  • Refresh the page and replicate the issue that needs to be monitored.
  • After successfully recreating the issue, right-click on any row of the activity pane and select Save all as HAR with Content or click the Export HAR icon to download the HAR file.

Screen recording If you are experiencing a browser issue on an iOS device, please collect a screen recording from the affected device when opening a ticket with our Support Team. Instructions on how to do this can be found in Apple's documentation .  

Screen Recording If you are experiencing a browser issue on an Android device, you will need to use a third-party tool to generate the recording as there is not a native screen recording function for Android devices. Samsung devices now have  built-in screen recording functionality .

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How to generate a HAR file

Adobe teams and enterprise customers.

Generating a HAR file would be helpful if you need detailed information about network requests within the customer's browser for troubleshooting. This article helps you know how to generate a HAR file in Chrome, Firefox, Edge, and Safari.

The screenshots below show the DevTools in Focus Mode with a vertical Activity Bar. Depending on your settings, your configuration may look different. For more information, see  Simplify DevTools using Focus Mode .

Google Chrome

The following steps show how to use the developer tools in Google Chrome. For more information, see  Chrome DevTools .

In the Chrome browser, navigate to the step prior to where the issue occurs.

Press F12 to launch the developer tools. You can also launch the tools from the toolbar menu under  More tools  >  Developer tools .

By default, the browser keeps trace information only for the page that's currently loaded. Set the following options so the browser keeps all trace information, even if your repro steps require going to more than one page:

Select the Console tab, select Console settings, then select Preserve Log.

Screenshot that highlights the Preserve log option on the Console tab in Chrome.

Select the Network tab, then select Preserve log.

Screenshot that highlights the Preserve log option on the Network tab in Chrome.

On the Network tab, select Stop Recording network log and Clear.

har file safari

Select Record network log, then reproduce the issue in the browser.

Screenshot that shows how to record the network log in Chrome.

You'll see a session output similar to the following image.

Screenshot that shows the session output in Chrome.

After you have reproduced the unexpected behavior, select Stop Recording network log, then select Export HAR and save the file.

Screenshot that shows how to Export HAR on the Network tab in Chrome.

Package the browser trace HAR file, and console output, in a compressed format such as .zip.

Attach the compressed file to the support ticket.

The following steps show how to use the developer tools in Apple Safari on Mac. For more information, see  Safari Developer Tools overview .

Enable the developer tools in Safari:

Select Safari, then select Preferences.

Select the Advanced tab, then select Show Develop menu in the menu bar.

Screenshot of the Safari advanced preferences options.

In the browser, navigate to the step prior to where the issue occurs.

Select Develop, then select Show Web Inspector.

har file safari

Select the Console tab, then select Preserve Log.

Screenshot that shows the Preserve Log on the Console tab.

Select the Network tab, then select Preserve Log.

Screenshot that shows the Preserve Log option on the Network tab.

On the Network tab, select Clear Network Items.

har file safari

Reproduce the issue in the browser. You'll see a session output similar to the following image.

Screenshot that shows the output after you've reproduced the issue.

After you have reproduced the unexpected behavior, select Export and save the file.

har file safari

Back in the browser developer tools pane, select the Console tab and expand the window. Place your cursor at the start of the console output then drag and select the entire contents of the output. Use Command-C to copy the output and save it to a text file.

Screenshot that shows where you can view and copy the console output.

Package the browser trace HAR file, console output, and screen recording files in a compressed format such as .zip.

The following steps show how to use the developer tools in Firefox. For more information, see  Firefox Developer Tools .

Press F12 to launch the developer tools. You can also launch the tools from the toolbar menu under  More tools  >  Web developer tools .

Select the Console tab, select the Settings icon, and then select Persist Logs.

Screenshot of the Console setting for Persist Logs.

Select the Network tab, select the Settings icon, and then select Persist Logs.

Screenshot of the Network setting for Persist Logs.

On the Network tab, select Clear.

har file safari

Reproduce the issue in the browser. You'll see session output similar to the following image.

Screenshot showing example browser trace results.

After you have reproduced the unexpected behavior, select Save All As HAR.

har file safari

Microsoft Edge

The following steps show how to use the developer tools in Microsoft Edge. For more information, see  Microsoft Edge DevTools .

Press F12 to launch Microsoft Edge DevTools. You can also launch the tools from the toolbar menu under More tools > Developer tools.

By default, the browser keeps trace information only for the page that's currently loaded. Set the following options so the browser keeps all trace information, even if your repro steps require going to more than one page.

Screenshot that highlights the Preserve log option on the Console tab in Edge.

Select the Network tab. If that tab isn't visible, click the More tools (+) button and select Network. Then, from the Network tab, select Preserve log.

Screenshot that highlights the Preserve log option on the Network tab in Edge.

Select Record network log, then reproduce the issue in the portal.

Screenshot showing how to record the network log in Edge.

You'll see session output similar to the following image.

Screenshot showing session output in Edge.

After you have reproduced the unexpected portal behavior, select Stop Recording network log, then select Export HAR and save the file.

Screenshot showing how to Export HAR on the Network tab in Edge.

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How to collect a network trace

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If you come across an issue, a network trace can sometimes provide much helpful information. This how-to guide shows you the options to collect a network trace.

A network trace contains the full contents of every message sent by your app. Never post raw network traces from production apps to public forums like GitHub.

Collect a network trace with Fiddler

Fiddler is a powerful tool for collecting HTTP traces. Install it from telerik.com/fiddler , launch it, and then run your app and reproduce the issue. Fiddler is available for Windows, macOS, and Linux.

If you connect using HTTPS, there are some extra steps to ensure Fiddler can decrypt the HTTPS traffic. For more information, see the Fiddler documentation .

Once you've collected the trace, you can export the trace by choosing File > Save > All Sessions from the menu bar.

Collect a network trace with tcpdump (macOS and Linux only)

This method works for all apps.

You can collect raw TCP traces using tcpdump by running the following command from a command shell. You may need to be root or prefix the command with sudo if you get a permissions error:

Replace [interface] with the network interface you wish to capture on. Usually, this is something like /dev/eth0 (for your standard Ethernet interface) or /dev/lo0 (for localhost traffic). For more information, see the tcpdump man page on your host system.

Collect a network trace in the browser (Browser-based apps only)

Most browser Developer Tools have a "Network" tab that allows you to capture network activity between the browser and the server.

If the issues you are investigating require multiple requests to reproduce, select the Preserve Log option with Microsoft Edge, Google Chrome, and Safari. For Mozilla Firefox select the Persist Logs option.

Microsoft Edge (Chromium)

Open the DevTools

  • Select Ctrl + Shift + I (Windows/Linux) or Command + Option + I (macOS)
  • Select Settings and more and then More Tools > Developer Tools
  • Select the Network Tab
  • Refresh the page (if needed) and reproduce the problem

Select the Export HAR... in the toolbar to export the trace as a "HAR" file

Collect network trace with Microsoft Edge

Google Chrome

Open the Chrome DevTools

  • Select Customize and control Google Chrome and then More Tools > Developer Tools

Collect network trace with Google Chrome

Mozilla Firefox

Open the Firefox Developer Tools

  • Select Open menu and then Web Developer > Toggle Tools
  • Right-click anywhere in the list of requests and choose "Save All As HAR"

Collect network trace with Mozilla Firefox

  • Select Command + Option + I
  • Select Developer menu and then select Show Web Inspector

Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: https://aka.ms/ContentUserFeedback .

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Additional resources

IMAGES

  1. Generating HAR Files

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  2. A HAR file: Pro Tips for Developers

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  3. How to retrieve a HAR file?

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  4. web

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  5. How To Create Har File From Google Chrome Firefox And Analyze It

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  6. Generating a HAR file for troubleshooting

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VIDEO

  1. Get Safari On Your PSP

  2. How to get your HAR file for GFX 2023

  3. Export har file

  4. How to download a HAR File?

  5. How To Find Safari Download Files On iPhone || iPhone Safari Me Download File Kaha Save Hota Hai

  6. How to find your downloads in Safari

COMMENTS

  1. How to Generate a HAR File in Chrome, IE, Firefox, and Safari

    Once the page is loaded, right click and "Save All As HAR". Select the Console tab and right-click on in the console box. Select all and Copy Message Copy log messages to the preferred text editor. Upload the HAR and log files to the support ticket. How to generate a HAR and log file in Safari. Open Safari.

  2. How to Collect a HAR File and HTTP Error Logs Using Safari

    The "Show Web Inspector" option will not be available until the user browses beyond Safari's home page. All credentials and session cookies within a HAR file should be removed before sharing with Carbon Black The HAR file is a text file, it can be opened in a text editor and searched for the SESSION cookie value and replaced with <REDACTED>

  3. How can you export a har file on Safari?

    When you have the "Web inspector" visible in Safari and you're viewing the "Network" tab, the "Export" button at the top right will export a HAR file of the last loaded page. One thing to note, when I try to do this using a localhost server, "Export" is greyed out most of the time so I can't actually download a HAR.

  4. So, you've been asked for a HAR file. Here's what to do.

    In the Safari menu, click "Safari" → "Preferences". Then in the "Advanced" tab, check the box that says "Show Develop menu in meny bar". 2. Navigate to the webpage where you saw the bug you are working on troubleshooting. 3. In Safari's menu bar, click "Develop" → "Show Web Inspector".

  5. Creating a HAR file in Safari

    HAR (HTTP Archive) is a file format used by several HTTP session tools to export the captured data. This can be highly useful in troubleshooting complex issues by obtaining additional information about the network requests that are generated in the browser while an issue occurs. Consult the remainder of this technical note for instructions on Safari.

  6. Generate a HAR Capture on an iOS Device

    Connect the iOS device to the Mac computer using a cable and make sure the iOS device is recognized. On the iOS device, launch Safari and reproduce the issue. Using the Mac computer, launch Safari, then click on Develop > Select the relevant iPad > Click on the session and that will open the developer tools. From here, export the HAR file.

  7. Capture a browser trace for troubleshooting

    Package the browser trace HAR file, console output, and screen recording files in a compressed format such as .zip. Share the compressed file with Microsoft support by using the File upload option in your support request. Safari. The following steps show how to use the developer tools in Apple Safari on Mac.

  8. Generating HAR files and analyzing web requests

    Providing HAR file to Support. Go to the Network tab of the Web Inspector. Make sure the checkbox for Disable Caches is ticked. Refresh the page to start capturing the traffic between the browser to the server. Note: Please capture a full page load so we can see the requests made prior to the problem we're analyzing.

  9. How to generate HAR file in Chrome, Firefox, Edge and Safari

    How to generate HAR file in Chrome. Open Google Chrome and go to the page where the issue is occurring. Select the Chrome menu > More Tools > Developer Tools. From the panel opened, select the Network tab. Look for a round Record button in the upper left corner of the tab, and make sure it is red. If it is grey, click it once to start recording.

  10. How to Use HAR Files to Analyze Performance Over Time

    Click the Export HAR (down arrow icon) to export the HAR file. Save the HAR file. Firefox. Close all private windows in Firefox. Open a new private window in Firefox. Go to Tools > Developer > Network or ctrl-shift-E. Refresh the page. In the Cog icon (upper right side of the page), choose Save All As Har. Save the HAR file. Safari

  11. Generate and Analyze HAR Files

    Ensure that Show Develop menu in menu bar checkbox is checked under Safari > Preferences > Advanced.. Choose File > Open New Private Window.. Choose Show Web Inspector in the Developer menu, then navigate to the Network tab.. To the right of All near the top-left of the Web Inspector, click the Filter button and choose Preserve Log.. Visit the web page where the issue occurs.

  12. How to collect a HAR file

    Safari To create a HAR file in Safari, follow these steps: Check the Safari menu bar at the top of the screen for a Develop menu. If not visible, turn it on by going to Safari → Settings → Advanced. Check the checkbox at the bottom next to Show Develop menu in menu bar. Go to the URL where the issue occurs. Do not reproduce the issue yet.

  13. Create a HAR file for Safari

    2. Identify and replace all sensitive information captured in the HAR file with a placeholder 3. Save HAR File . The following instructions provide the steps to generate a HAR file for troubleshooting. Open your browser. Press Option + Command + i to view the page. Select the Network tab. Reproduce the error; Select Export as HAR File.

  14. Capturing a HAR File

    Capturing a HAR File in Safari: In Safari, first ensure your Develop menu is available by navigating to the menu bar and selecting Preferences >> Advanced: Show Develop menu in menu bar. Go to the page where you are experiencing the problem. In the menu bar at the top, click Develop and select Show Web Inspector.

  15. Your Questions About HAR Files Answered

    Steps for Analyzing in Safari. In Safari, select Preferences, then Advanced, then Show Develop to access Developer Tools. Select the Network or Performance tab, turn on record, or the network capture feature, and interact with the site as needed. Stop the recording and save the HAR file.

  16. Create a HAR File to Share with Customer Support

    Safari. To start generating your HAR file, press option + command + i. If this doesn't do anything, you might need to enable the Develop menu. To do so, select the Safari menu > Preferences. Go to the Advanced tab and select the Show Develop menu in menu bar checkbox. Go to the Network tab.

  17. How do I capture console and HAR logs or mobile phone screen recordings

    Paste the content in a text file and name it "console-log.txt". Send both files to Duo Support as a reply to your open support case. Safari. In Safari, go to the page where you are experiencing trouble. In the menu bar at the top, click Develop and select Show Web Inspector. Click Preserve Log. Click the Console tab and select Preserve Log.

  18. How to generate a HAR capture on an iOS device

    Steps. Connect your iOS device to your Mac computer using a cable and make sure your iOS device is recognised. Using your Mac computer, launch Safari, then click on Develop > Select your iPad > Click on the session and that will open the developer tools. From here, you can export the HAR file and send it to Umbrella Support ticket.

  19. How to generate a HAR file

    Back in the browser developer tools pane, select the Console tab. Right-click one of the messages, then select Save All Messages to File, and save the console output to a text file. Package the browser trace HAR file, console output, and screen recording files in a compressed format such as .zip.

  20. Generate HAR files

    Generate a HAR file for Opera. In an Opera browser window, open the page where the issue is occurring. From the Opera menu at the top-left of the browser window, select Developer > Developer Tools, or simply press the F12 button. The Developer Tools window opens as a docked panel at the side or bottom of Opera.

  21. How to get HAR files for webviews?

    Open Safari. From the top menu go to Safari > Preferences. Go to Advanced and select "Show Develop menu in menu bar." Get the HAR file. Open Safari. From the top menu go to Safari > Develop. From there you should be able to select your device and your apps. Then you should be able to see your webrequest traffic for export.

  22. How to collect a network trace

    Open the DevTools. Select F12. Select Ctrl + Shift + I (Windows/Linux) or Command + Option + I (macOS) Select Settings and more and then More Tools > Developer Tools. Select the Network Tab. Refresh the page (if needed) and reproduce the problem. Select the Export HAR... in the toolbar to export the trace as a "HAR" file.

  23. Creating HAR files for troubleshooting with Support

    To create a HAR file in Safari: Enable the Developer menu: Click on Safari menu > Advanced > Show Develop menu in menu bar. Select Develop (menu) > Show Web Inspector > Menu (tab) Check the Preserve Log checkbox. Refresh the page or perform the task to record the events. Click Export to download and save the HAR file.