Drop a .har file below to see every request, the ones that failed, the slow and heavy ones, and where redirects went — then save a copy with cookies and tokens removed before you send it to anyone.
Works best on a computer. Prefer it in Chrome's toolbar? Get the free HARScope extension.
The things a support engineer looks for first, each one a click away.
4xx and 5xx answers and requests that never got a status, worst first.
Requests that took a second or more, and responses of 1 MB or more, largest first.
Every hop from the first address to where it landed — and loops, marked.
Headers, query string, payload, response body (JSON formatted, images previewed) and a timing bar.
Filter by URL, domain, type, method and status — or search inside headers and bodies too. Sort any column.
See how many cookies, auth headers and tokens the file carries, and save a cleaned copy.
A HAR file is a recording of what your browser sent and received, and it routinely contains session cookies, Authorization headers and API keys. That is why this analyzer is built so it cannot send your file anywhere: it runs in a separate frame served with the security policy connect-src 'none', which makes the browser refuse every fetch, XHR, WebSocket and beacon from it — whatever the code tries.
/harscope/analyzer/app/ show the policy.This page itself counts visits with Google Analytics, like the rest of bilingoplus.com (website privacy); the analyzer frame has no analytics and nothing it could send.
HARScope for Chrome opens HAR files with one click, without this page and without an internet connection. Free, zero permissions.
No. The analyzer runs in your browser, inside a frame whose security policy blocks every fetch, XHR, WebSocket and beacon — the browser itself will not let it send your file anywhere. You can check: open DevTools → Network, then open your file here; no request carries it.
Failed requests (4xx, 5xx and requests that never got a status), slow requests (a second or more), heavy responses (1 MB or more) and redirects, with each redirect chain hop by hop. Each one is a filter: click it and the table shows exactly those requests.
Yes. Clean & save writes a copy in which cookie values, Authorization and API-key headers, tokens in URLs and request bodies are replaced with REDACTED; response bodies are optional. Names stay, so the copy still shows what was sent. It matches names and token shapes, so skim the copy before you send it.
Yes — no account, no limits on the number of files. HARScope is also a free extension for Chrome.
The extension opens from the Chrome toolbar without visiting this page, works with no internet at all, and asks for no permissions. Its current version, 1.0, is a plain viewer — request table, waterfall, headers, bodies and timings; the checks for failed, slow and heavy requests, redirect chains and Clean & save are on this page only, for now.
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