How to use Free Website Down Checker
- Paste or load response headers, cURL -i output or a HAR into Free Website Down Checker.
- Click Analyze — Free Website Down Checker processes everything on your device.
- Read the parsed redirect chain and security-header audit that Free Website Down Checker lays out for you.
About this tool
Free Website Down Checker runs entirely in your browser. Free Website Down Checker reconstructs a redirect chain and status codes from response headers, a curl -i dump or a HAR you capture in DevTools.
It also audits the final response for security headers such as HSTS, CSP and X-Content-Type-Options. Your input never leaves the page, and no account or install is required.
Frequently asked questions
What is Free Website Down Checker for?
Use Free Website Down Checker to check your input without installing anything; everything happens client-side.
Is Free Website Down Checker free to use?
Yes — Free Website Down Checker is completely free, with no usage limits.
Where is my data processed by Free Website Down Checker?
Entirely in your browser — Free Website Down Checker keeps your data on your own machine and sends nothing anywhere.
Why can't Free Website Down Checker fetch a live URL itself?
Browsers block cross-origin requests (CORS), so Free Website Down Checker analyzes response headers, curl -i output or a HAR you capture and paste — all locally.
Can I use Free Website Down Checker without a connection?
Yes — after the first load Free Website Down Checker runs entirely offline.