HAR Analyzer
Free, no signup. Drop in a browser network capture to inspect failures, redirects, transfer weight, timings, caching, third parties, and tag evidence. The raw HAR never leaves this tab.
Local cap: 50 MiB and 5,000 entries. Request/response bodies, cookies, sensitive header values, and query values are never included in the report.
Runs entirely in your browser — nothing you paste is uploaded or stored. The HAR and its analyzed contents are not uploaded. Close the tab to discard the imported capture. Anonymous run-level outcome counters may be used for aggregate research; URLs, domains, IPs, and identifiers are never included, and no statistic is released below 100 runs.
How to use it
- Export a HAR with content from your browser’s Network panel.
- Select the file and analyze it locally.
- Review failed requests, redirects, third parties, resource weight, cache evidence, and detected tag requests.
- Download the sanitized JSON report when you need to share evidence. Never share the original HAR without reviewing it separately.
Site passport Local context for this saved site
Local data
Saved targets, named lists, and recent check summaries remain only in this browser.
Request waterfall
Chronological request timing from the HAR. Phase widths come from recorded timing fields; overlapping rows are expected.
Requests by resource type
Third-party domains
Tag and consent vendor evidence
Requests needing review
| # | Status | Type | Host / URL | Transfer | Duration | Cache |
|---|
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Sample report
A typical report groups requests by resource type, lists third-party hosts, and surfaces failed requests, redirectsA redirect sends browsers and crawlers from a requested URL to a different one. An HTTP redirect specifically is a 3xx status code paired with a Location header; meta refresh and JavaScript redirects achieve a similar navigation without being a 3xx response themselves. Permanent redirects (301/308) are Google's signal the target should be canonical; temporary ones (302/303/307) aren't., and explicit cache missesCaching stores a copy of a page or resource — in a browser, a CDN edge node, or a search crawler's own cache — so it can be served again without regenerating or re-downloading it. It isn't a direct ranking factor, but it feeds page speed and crawl efficiency. for review. The values always come from the selected HAR; this sample description is not a benchmark.
How it works
The browser reads the HAR locally, validates its shape and limits, removes sensitive URL and header values, then classifies the bounded request entries. No request or response bodies are included in the displayed or exported report.
What the report can show
- Failed requests and redirect responses.
- Transfer bytes and summed request duration as HAR-recorded evidence, not a page-load score.
- First-party versus third-party hosts based on the first valid request host.
- Cache hit, miss, and revalidation evidence from recorded response status and headers.
- Tag-manager, analytics, advertising, and consent loader/request patterns.
Privacy and interpretation boundaries
HAR files are sensitive source material. Analysis is local, but the original file remains your responsibility. The sanitized export contains redacted URLs and header names only—not header values, bodies, post data, or cookies. Timings can overlap, browser HAR exporters differ, and a network request does not prove a vendor processed it.
Frequently asked questions
Is my HAR uploaded?
No. The selected file is parsed and analyzed by JavaScript in this browser tab. The analyzer does not send or persist the raw HAR or its contents.
Can HAR files contain secrets?
Yes. HAR files can contain cookies, authorization headers, query values, and request bodies. This tool omits bodies, cookies, sensitive headers, and all query values from its results and exports, but you should still protect the original file.
What are the analysis limits?
Files are capped at 50 MiB and analysis at 5,000 entries. If more entries exist, the report clearly states how many were not checked.
Does tag evidence prove tracking fired?
No. A matched request or loader is evidence only. It does not prove data was accepted, attributed, or sent with valid consent.
Feature requests for Har Analyzer
Upvote what you want most. New ideas can be submitted from the floating Feedback menu; requests appear here once approved, and the most-wanted rise to the top.
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Sobre a ferramenta
Grátis, sem cadastro. Drop em um navegador rede captura para inspecionar falhas, redirecionamentos, transfer weight, timings, caching, third parties, e tag evidência. O raw HAR never leaves este tab.
Analisar um HAR file locally para falhas, redirecionamentos, transfer weight, timings, cache evidência, third parties, e tag solicitações sem uploading o captura.
Recursos
- Como usar Exportar um HAR com conteúdo de seu browser’s Rede panel. Selecione o file e analisar isso locally. Revisão failed solicitações, redirecionamentos, third parties, resource weight, cache evidência, e detected tag solicitações. Download o sanitized JSON relatório quando você precisa para participação evidência. Never participação o original HAR sem reviewing isso separately.
- Solicitação waterfall Chronological solicitação timing de o HAR. Phase widths come de recorded timing campos; overlapping linhas são esperado. Solicitações por resource tipo Third-party domains Download sanitized JSON Download sanitized solicitação CSV Tag e consent vendor evidência Solicitações needing revisão # Status Tipo Host / URL Transfer Duration Cache
- Escolha um HAR 1.2 file Analisar HAR Local cap: 50 MiB e 5,000 entries. Solicitação/resposta bodies, cookies, sensitive cabeçalho values, e consulta values são never included em o relatório.
- Home › Ferramentas › HAR Analyzer
Como funciona
Como usar Exportar um HAR com conteúdo de seu browser’s Rede panel. Selecione o file e analisar isso locally. Revisão failed solicitações, redirecionamentos, third parties, resource weight, cache evidência, e detected tag solicitações. Download o sanitized JSON relatório quando você precisa para participação evidência. Never participação o original HAR sem reviewing isso separately.
Limitações
- O que são o analysis limites?
- Files são limitado em 50 MiB e analysis em 5,000 entries. If mais entries exist, o relatório claramente states como muitos foram não checked.
Perguntas frequentes
O que são o analysis limites?
Files são limitado em 50 MiB e analysis em 5,000 entries. If mais entries exist, o relatório claramente states como muitos foram não checked.
É my HAR uploaded?
Não. O selecionado file é parsed e analisou por JavaScript em este navegador tab. O analyzer faz não send ou persist o raw HAR ou seu contents.
Faz tag evidência prove tracking fired?
Grátis, sem cadastro. Drop em um navegador rede captura para inspecionar falhas, redirecionamentos, transfer weight, timings, caching, third parties, e tag evidência. O raw HAR never leaves este tab.
Pode HAR files contain secrets?
Sim. HAR files pode contain cookies, authorization cabeçalhos, consulta values, e solicitação bodies. Este ferramenta omits bodies, cookies, sensitive cabeçalhos, e todas consulta values de seu resultados e exports, but você deve ainda proteger o original file.