HTTP Status Code Checker & Explainer

Check any URL's HTTP status code instantly. Get detailed explanations, response headers, redirect chains, and troubleshooting advice, all for free.

Try:
HEAD is faster (only checks headers, no body download)
Bulk URL Checker
Check multiple URLs at once
Status Code Reference
Browse all HTTP status codes
Compare Status Codes
Side-by-side comparison tool

How to Use This Status Checker

  1. Enter any URL in the input field (e.g., example.com or https://example.com)
  2. Choose the HTTP method (HEAD is fastest for checking, GET retrieves content)
  3. Click "Check Status" or press Enter
  4. View the status code, response time, and detailed explanation
  5. Explore response headers, redirects, and SSL information

What Are HTTP Status Codes?

HTTP status codes are three-digit numbers returned by web servers to indicate the result of a client's request. They're essential for debugging web applications, monitoring APIs, and understanding why websites might not be working correctly.

2xx - Success

Request succeeded. The server found and returned the requested resource.

3xx - Redirection

Resource has moved. Client needs to follow a redirect to find the resource.

4xx - Client Error

Problem with the request. URL not found, authentication required, or bad request format.

5xx - Server Error

Server failed to fulfill valid request. Internal error, service unavailable, or timeout.

Common Status Code Issues & Solutions

ProblemLikely StatusSolution
Page not found404Check URL spelling, look for redirects
Authentication failed401Verify credentials, refresh token
Access forbidden403Check permissions, verify IP not blocked
Server error500Check server logs, contact administrator
Too many requests429Wait before retrying, implement backoff

Tired of manual checking?

ObserveOne monitors your URLs 24/7, alerts on failures, and tracks response times automatically.

Start Free Monitoring
No credit card required

Side-by-side breakdowns, no fluff.