HAR File Viewer
Upload a .har file (exported from Chrome/Firefox DevTools Network tab) to browse every request with status, size, timing, headers and body.
Drop a .har file here, or click to choose one
Processed entirely in your browser. Nothing is uploaded.
What is a HAR file?
A HAR (HTTP Archive) file is a JSON export of every network request a browser made while recording — captured from the DevTools Network tab via "Save all as HAR". It includes full request/response headers, timing breakdowns, and bodies, making it useful for debugging performance issues, sharing a repro case, or auditing what a page actually loads.
How to use this tool
- In Chrome/Firefox DevTools, open the Network tab, right-click any request and choose "Save all as HAR with content".
- Drop that file here — it's parsed entirely in your browser, nothing is uploaded.
- Click any row to expand full request/response headers and body.
Frequently Asked Questions
Can a HAR file contain sensitive data?
Yes — HAR exports can include cookies, auth tokens and full response bodies. Treat HAR files as sensitive, and be cautious about sharing them with third parties. This tool never uploads the file anywhere.
Why is some response body missing?
DevTools only embeds response bodies in the HAR if you chose "with content" when saving, and it may omit very large or binary responses depending on browser settings.