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HAR File Analyzer

Drop a .har export from your browser's DevTools Network tab to get summary stats, a sortable request table and a waterfall chart of request timings. The file is parsed locally — it never leaves your browser.

Drop a .har file here, or click to choose
DevTools → Network tab → right-click → "Save all as HAR". Parsed 100% locally.

About this tool

A HAR (HTTP Archive) file is a JSON log of every network request a page made — exported from Chrome, Firefox, Edge or Safari DevTools. This tool reads it with the browser's FileReader, computes totals and per-type breakdowns, and draws a waterfall of each request's phases: blocked (queueing), DNS, connect (TCP + TLS), send, wait (TTFB — usually your server's fault) and receive (download). Requests slower than 1 second and 4xx/5xx responses are flagged in red.

Privacy: HAR files often contain cookies, auth tokens and full request/response headers. This page parses the file entirely in your browser — nothing is uploaded, stored, or sent anywhere. Reloading the page erases everything. Still, sanitize HARs before sharing them with anyone.

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Found this useful? 113 free, browser-only tools by Yuvrajsinh Jadav — an engineer who ships production AI systems. No account, nothing sent anywhere.
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