URL Status & Reachability

Web URL Checker

Web URL Checker parses response headers, curl -i output or a HAR in your browser to map redirects and audit security headers.

Check web URLs for reachability. Example: validate a set of page links.
Web URL check
  1. Enter a web address.
  2. Check its status code.
  3. Review the response.
Example: scan a URL for a dead response.
Use to test a single web address.
Client-sideRuns in your browser — paste or load your data and it is processed locally; nothing is uploaded.

Web URL Checker is a browser-based web developer tool on WebDevToolsBase. Web URL Checker parses response headers, curl -i output or a HAR in your browser to map redirects and audit security headers. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.

Advertisements

Web URL Checker (Reference) is a free URL Status & Reachability utility that runs entirely in your browser — nothing you enter is uploaded.

Web URL Checker (Reference)

Web URL Checker parses response headers, curl -i output or a HAR in your browser to map redirects and audit security headers.

Advertisements

How to use Web URL Checker

  1. Paste or load response headers, cURL -i output or a HAR into Web URL Checker.
  2. Press Analyze to run it locally in your browser.
  3. Review the parsed redirect chain and security-header audit shown below.
Advertisements

About this page

There is no server behind Web URL Checker. Web URL 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. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.

Frequently asked questions

What is Web URL Checker for?

Web URL Checker lets you check your input right in the browser, with the result shown instantly and nothing uploaded.

Is Web URL Checker free to use?

Yes — Web URL Checker is completely free, with no usage limits.

Is my input private in Web URL Checker?

Yes — your input never leaves your device; Web URL Checker does all the work in your browser.

Why can't Web URL Checker fetch a live URL itself?

Browsers block cross-origin requests (CORS), so Web URL Checker analyzes response headers, curl -i output or a HAR you capture and paste — all locally.

Can I use Web URL Checker without a connection?

Yes — after the first load Web URL Checker runs entirely offline.

Related references