HAR File Parser
Upload a .HAR (HTTP Archive) file to inspect network traffic. Filter for JSON/XHR requests to find the exact API calls used by any website.
Click to Upload .HAR File
Export this from Chrome DevTools (Network Tab > Export HAR)
Inspect Traffic Offline
The browser's Network tab is transient—if you close the tab, the data is gone. Exporting as a HAR file gives you a permanent snapshot of a scraping session. You can share this file with teammates or analyze it later to understand exactly how a website behaves under the hood.
Reverse Engineer APIs
By filtering for JSON responses in a HAR file, you can isolate the exact API endpoints a website uses to populate its content. You can see the request headers, cookies, and payload parameters required to replicate that request in your Python or Node.js script.
Debug Performance
HAR files contain precise timing data (DNS lookup, connect time, SSL handshake, wait etc.). This is invaluable for debugging why your scraper is slow. You might find that a specific 3rd party tracker is timing out and blocking the rest of the page load.
Frequently asked questions
Learn about network logging and HAR analysis
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