HAR File Formatter
Parse and filter a HAR (HTTP Archive) file — search by URL, method, status class or content type, and see per-request size and timing in a sortable table.
Input
Filters
Output
| Metric | Value |
|---|---|
| No data yet | |
| Method | Status | Type | URL | Transfer Size | Time |
|---|---|---|---|---|---|
| No data yet | |||||
Guides
What is a HAR file?
A HAR (HTTP Archive) file is the standard JSON format browser DevTools export when you save a network capture — every request a page made, with its method, status, headers, timing, and payload sizes. It's the go-to format for sharing "here's exactly what happened over the network" with a teammate or support engineer.
How this tool works
- Paste HAR JSON into the input box, or upload a
.harfile exported from your browser's Network tab. - Use the Search, Method, Status, and Type filters to narrow down the request list — search matches against the URL, method, MIME type, and status code.
The Summary table shows how many requests are showing versus the total, how many succeeded versus errored, and total transfer/content size. The Requests table lists each matching request's method, status, content type, URL, transfer size, and total time — copyable and downloadable as CSV.
Content type categories
Requests are grouped into simplified categories (document, xhr/JSON, stylesheet, script, image, font, media, other) based on their response MIME type, matching how browser DevTools categorizes network requests — useful for quickly filtering out asset noise and looking only at API calls.
Common uses
- Reviewing a bug report's attached HAR file to spot failed or slow requests
- Auditing a page's network requests for unexpectedly large assets
- Filtering a large capture down to just the API (XHR/JSON) calls
- Getting a quick success/error breakdown across a whole session capture
Privacy
This tool runs entirely in your browser. Your HAR file is never uploaded to a server.