Dev Tool

HTTP Status Code Checker

Check HTTP status codes for multiple URLs at once. Detects 200 OK, 301/302 redirects, 404 Not Found, 500 errors and all other codes. See final URL after redirects and response time.

URLs to Check — one per line (max 20)

Follow redirects Show headers 0 URLs

HTTP Status Code Reference

2xx — Success

200 OK, 201 Created, 204 No Content

3xx — Redirect

301 Moved, 302 Found, 307 Temporary, 308 Permanent

4xx — Client Error

400 Bad Request, 401 Unauthorized, 403 Forbidden, 404 Not Found

5xx — Server Error

500 Internal Server Error, 502 Bad Gateway, 503 Service Unavailable

Frequently Asked Questions

What does HTTP status code 200 mean?+

HTTP 200 OK means the request was successful. The server found the resource and returned it. This is the normal response for most web pages, API calls and file downloads.

What is the difference between 301 and 302 redirects?+

A 301 redirect is permanent — search engines transfer the original page's ranking signals to the new URL. A 302 redirect is temporary — search engines keep the original URL indexed. Use 301 for permanent moves and 302 for temporary redirects like A/B testing.

What causes a 404 error?+

A 404 Not Found error means the URL does not exist on the server. Common causes: the page was deleted, the URL was changed without a redirect, or the URL was typed incorrectly. Check our Redirect Checker to see if a redirect is configured.

What does a 503 error mean?+

503 Service Unavailable means the server cannot handle the request — usually due to overload, maintenance or a crashed application. Unlike 500, a 503 usually implies a temporary condition. Retry-After headers sometimes tell you when to try again.

What is an HTTP status code?

A 3-digit number returned by a server indicating the result of a request. 2xx = success, 3xx = redirect, 4xx = client error, 5xx = server error.

What does a 301 redirect mean?

A 301 is a permanent redirect. Search engines transfer link equity to the new URL and update their index to the destination.

Can I check multiple URLs at once?

Yes — enter one URL per line to check multiple URLs simultaneously.

Checking status codes in bulk

The status code is the three-digit number a server sends before any page content. It tells browsers and search engines whether a URL worked, moved or failed. Checking many URLs at once is the fastest way to audit a site after a migration, a redesign, or a round of deleted pages.

The codes you will see most

200 OK: the page loaded normally.
301 and 308: permanent redirects. 302 and 307: temporary ones.
403 Forbidden: the server refused the request. Firewalls often return this to automated checks, so confirm in a browser before assuming the page is broken.
404 Not Found and 410 Gone: the page does not exist. 410 says it was removed on purpose, and search engines drop it faster.
429 Too Many Requests: you are being rate limited. Slow down and try again.
500, 502, 503 and 504: server errors, gateway failures, maintenance or timeouts, usually a problem behind the web server rather than with the URL itself.

When a bulk check pays off

After moving URLs or domains. Every old address should return a 301 to its new home, not a 404.
Before submitting a sitemap. Every URL in it should return 200. Redirects and errors in a sitemap waste crawl time.
After removing content. Removed pages should return 404 or 410, or redirect to a closely related page.
Checking outbound links in an article or resource list, so readers do not hit dead ends.

Watch out for soft 404s

A page that shows a "not found" message but returns 200 is a soft 404. Visitors see an error while search engines see a normal page and may index it. Always check the code, not just what the page looks like.