HTTP Status Code Checker — Check URL Response Online
Check HTTP status codes, response time, and redirect chains
Frequently Asked Questions
What do HTTP status codes mean?
2xx codes mean success (200 OK), 3xx mean redirects (301 Moved), 4xx mean client errors (404 Not Found), and 5xx mean server errors (500 Internal Server Error).
What is a good response time?
Under 200ms is excellent, under 1 second is good, 1-3 seconds is acceptable. Above 3 seconds indicates server performance issues.
Why is my site returning a 503 error?
503 Service Unavailable usually means your server is overloaded, undergoing maintenance, or a backend service is down. Check your server logs for details.
For authorized, legal, and ethical security testing only. Scans are rate-limited to 3 per day on the free tier.