How to use Check for 301 Redirect
- Add response headers, cURL -i output or a HAR to Check for 301 Redirect to get started.
- Click Analyze — Check for 301 Redirect processes everything on your device.
- Read the parsed redirect chain and security-header audit that Check for 301 Redirect lays out for you.
About this tool
Check for 301 Redirect runs entirely in your browser. Paste the headers, curl -i output or HAR you captured and Check for 301 Redirect maps the hops and status codes locally.
Because browsers block cross-origin live requests, Check for 301 Redirect works from captured headers rather than fetching the URL itself. No data is sent anywhere, so it stays fast and private by default.
Frequently asked questions
How do I use Check for 301 Redirect?
Use Check for 301 Redirect to check your input without installing anything; everything happens client-side.
Do I need an account for Check for 301 Redirect?
No — Check for 301 Redirect needs no account, sign-up or installation.
Where is my data processed by Check for 301 Redirect?
Entirely in your browser — Check for 301 Redirect keeps your data on your own machine and sends nothing anywhere.
Why can't Check for 301 Redirect fetch a live URL itself?
Browsers block cross-origin requests (CORS), so Check for 301 Redirect analyzes response headers, curl -i output or a HAR you capture and paste — all locally.
Can I use Check for 301 Redirect without a connection?
Yes — after the first load Check for 301 Redirect runs entirely offline.