HTTP Status Codes
Complete reference for all HTTP status codes. Look up any code to see its meaning, common causes, and troubleshooting tips. Covers 1xx informational through 5xx server error codes.
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About HTTP Status Codes
Complete reference for all HTTP status codes. Look up any code to see its meaning, common causes, and troubleshooting tips. Covers 1xx informational through 5xx server error codes.
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Frequently Asked Questions
What are HTTP status codes? expand_more
HTTP status codes are standardized response codes returned by web servers to indicate the result of an HTTP request. They're grouped into five categories based on their first digit.
What do the categories mean? expand_more
1xx = Informational, 2xx = Success, 3xx = Redirection, 4xx = Client Error, 5xx = Server Error. The category tells you the general nature of the response.
Which codes are most common? expand_more
200 (OK), 301 (Redirect), 304 (Not Modified), 400 (Bad Request), 401 (Unauthorized), 403 (Forbidden), 404 (Not Found), 500 (Internal Server Error), and 502/503/504 (Gateway/Service errors) are the most frequently encountered.
What's the difference between 401 and 403? expand_more
401 means you need to authenticate (log in). 403 means you're authenticated but don't have permission to access the resource.
Why am I getting a 429 error? expand_more
429 means "Too Many Requests" - you've hit a rate limit. Wait for the cooldown period specified in the Retry-After header before making more requests.
What does 500 Internal Server Error mean? expand_more
A 500 error means the server encountered an unexpected condition. It's a server-side bug. Check server logs, review recent code changes, and verify database connectivity.
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Common Use Cases
- Look Up Codes: Enter any HTTP status code to get detailed information.
- Debug APIs: Understand what went wrong with your API requests.
- Common Causes: Learn why specific errors occur.
- Troubleshooting Tips: Get actionable solutions for each status code.
- Filter by Category: Browse codes by Informational, Success, Redirection, Client Error, or Server Error.