HTTP Status Codes: Complete Reference Guide | Free Tool
2 usesHTTP Status Code Tips
Complete Reference
All major HTTP status codes from 100 to 504 with detailed descriptions and use cases.
Search & Filter
Search by code number or keyword. Filter by category: 1xx Info, 2xx Success, 3xx Redirect, 4xx Client, 5xx Server.
Click to Expand
Click any status code to see its detailed description and when to use it.
Color-Coded
Each category has a distinct color for quick identification: blue, green, yellow, red, purple.
Frequently Asked Questions
What is a 404 error?
404 Not Found means the server cannot find the requested resource. The most common HTTP error seen by users.
What is a 301 redirect?
301 Moved Permanently tells browsers and search engines that a page has permanently moved to a new URL. Search engines transfer link equity.
What is a 500 error?
500 Internal Server Error means the server encountered an unexpected condition. It is a generic server-side error.
Is this free?
Yes.
Can this HTTP status code reference tool help me understand the implications of different 3xx redirect codes for SEO?
Yes, absolutely. Our HTTP status code reference provides detailed descriptions and use cases for all 3xx redirect codes, like 301 Moved Permanently and 302 Found. Understanding their nuances is crucial for SEO, as incorrect redirects can impact link equity, indexing, and user experience. Use the tool to compare codes and ensure you're implementing the most SEO-friendly redirect strategy for your website.
How to Use the Reference
- Browse all status codes or search by number
- Filter by category (1xx-5xx)
- Click any code to see the full description
- Use for web development and debugging