.HAR File Info & Viewer

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.HAR files online

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HTTP Archive network logs & more
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Extension
.HAR
Category
Developer
Primary Use
Network Performance Logging
Primary Software

Web Browser Developer Tools

What is a HAR file?

A .HAR file is an HTTP Archive FIle. It stores network request data. The format uses JSON to record interactions between a web browser and a website. The World Wide Web Consortium created this format to help developers analyze web performance and troubleshoot network errors.

How to open HAR files?

Standard web browsers like Google Chrome and Mozilla Firefox create these files using their built-in developer tools. You can open them using debugging proxy software like Charles Proxy or Fiddler. Web performance tools like GTmetrix also process .HAR files.

Using viewer.online

Because file extensions can have multiple meanings, viewer.online/har analyzes .HAR files to identify their exact format and creator software. It shows which programs can open the file and usually previews it. If you need to transform the data, you can convert the file to sensible target formats like .JSON or .CSV on convert.guru.

Summary

viewer.online/har directly opens and previews .HAR files in the browser, eliminating the need to install software or troubleshoot compatibility issues.

Frequently Asked Questions

What is a .HAR file?

It is an HTTP Archive file. It stores network logs in JSON format to record communication between a web browser and a web server.

How do I create a .HAR file?

Use web browser developer tools. In Google Chrome, you can open Developer Tools, go to the Network tab, right-click the requests, and save the data.

Is it safe to share a .HAR file?

It can be a security risk. .HAR files often contain sensitive information like session tokens and passwords. You must sanitize the file before you share it.

How do I read a .HAR file without special tools?

You can use a standard text editor. Because the file uses plain JSON, a text editor like Visual Studio Code or Notepad can easily open it.

What professional software opens HAR files?

Debugging and proxy tools open them. You can inspect the data using Charles Proxy or Fiddler.

Can I convert a .HAR file to CSV?

Yes, you can extract the data. You can convert the file to .CSV format on convert.guru to view the request data in a spreadsheet program.

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