How to Create HAR File From Browsers

Lillian Fletcher

Any business or site’s assistance group utilizes this HAR file to determine and fix efficiency concerns such as longer or sluggish filling times, page rendering problems, and mistake codes that might emerge due to these problems.

What is a HAR file?

An HTTP archive Format, likewise called a HAR file, is a JSON-formatted archive file that comprises your latest network activity as taped by your web internet browser. It tracks all the interactions, such as web demands and reactions in between a web internet browser and a site.

The HAR file records each resource packed by the internet browser, along with the time it required to fill each resource. These files include plain text logs of HTTP client-server connections.

. haris the extension for these archive files.

Why to produce HAR file?

The business or company assistance group might ask the HAR declare analysis when the user raises a ticket to deal with the problems.

HAR files supply a large range of info about HTTP client-server demands and reactions that help in debugging, such as internet browser settings and cookies, the quantity of time invested getting reaction information, quantity of time it required to pack a specific image on the site, the time it required to develop a server connection, and the time it required to send out a demand and to get a reaction.

Summary of the procedure

  • Initially go to the website where you’re having problems and start tape-recording all the web demands and interactions.

  • Recreate the issue by duplicating the actions.

  • Complete the capture and conserve the HAR file.

  • Evaluate the HAR file by your own or Send the file to Support group for repairing the Performance and page rendering problems.

How to create HAR file in various internet browsers?

Getting HAR declares catching an HTTP session differs from web browser to internet browser.


The Network tab in Developer Tools of all web browsers can be utilized to tape an HTTP session.

  • In Chrome, go to the page where you are experiencing issue.

  • Designer Tools can be accessed through the menu (Menu > More Tools > Developer Tools). Because Select the Network tab from the recently opened panel.

  • On the Network tab, Make sure the round button in the upper left corner remains in red. If it’s grey, double-click it to start tape-recording the interactions.

  • Make it possible for the maintain log to tape-record all the web demands and actions.

  • To export the HAR file, click the down arrow button in the network tab itself.

  • Conserve the HAR file to your computer system.


  • At the top-right of your web browser window, click the Firefox menu (3 horizontal parallel lines).

  • Select More tools > Web Developer > Network from the drop-down menu.

  • Click the settings button and switch on the continue logs alternative.

  • While the capture is continuous, revitalize the page and repeat the issue.

  • Right-click any row of the activity panel and choose Save all as HAR if you’ve effectively reproduced the issue.

  • Lastly, If in case console log file is likewise needed for fixing, browse to the Console tab and Select all by right-clicking any row and paste the material in some text file and share it to the assistance center.

Microsoft Edge

  • Select More Tools > Developer Tools by clicking … (the three-dot icon) at the top-right corner.

  • Browse to the network tab and begin a profiling session.

  • Check out the website and follow the guidelines to fix the issue.

  • And lastly conserve the HAR file by choosing “Export as HAR “

Internet Explorer

  • Open the web explorer and go to the page where you are having issues

  • click the equipment sign in the leading right corner.

  • Go to (Developer Tools > Network Tab)

  • While the capture is continuous, revitalize the page and duplicate the issue.

  • Click the “Export as HAR” icon (shape of floppy disc) after duplicating the issue effectively.

HTTP Watch Tool

For Google Chrome, Internet Explorer, and Microsoft Edge, you can likewise utilize HTTPWatch (in-browser HTTP sniffer) for recording web demands and reactions.

  • Download and set up the HTTPwatch tool initially.

  • Start the HTTPwatch capture and load the page where you are having problems and stop the capture as quickly as you’ve duplicated the issue.

  • And the capture ought to be conserved in HAR format.

Sites to examine HAR files

These tools are basic and reliable in picturing and examining the HAR file (logs of HTTP client-server interaction).

  • Google HAR analyzer — Choose a file by clicking the “Choose File” button and choose the HAR file you ‘d like to take a look at. The Analysis screen appears instantly after selecting the file. Filtering by HTTP status code is offered.

  • — A complimentary web-based application tool that shows a waterfall chart of all demands and enables you to dig to a particular demand. Press the Preview button after placing the HAR log into the text box listed below. Additionally, drag and drop the har files anywhere on the page to begin examining the file.

  • Site24x7 — This is likewise a complimentary site tool to envision HTTP Archive file. Search the file or paste its material in input box.


If you open a HAR file in a full-screen editor, you’ll see that it’s merely a JSON file including your web demand and its reactions. It might consist of the following possibly delicate info:

Request and Response Headers

Demand and Response Content

Authentication tokens, cookies, session tokens, passwords and API qualifications

Ensure you erase any delicate info from HAR files prior to sending them to an assistance group for analysis. Primarily, if the technical assistance group demands a HAR file with interactions with 3rd parties, vital details might be exposed.

I hope you discovered this short article extremely useful in learning more about HAR studying tools and how to create HAR files in various web browsers.