HTTP Status Code Lookup - HTTP Status Checker Free

Look up HTTP status codes quickly. Browse all standard HTTP response codes with descriptions and categories. Free HTTP status code reference for developers and SEOs.

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How to Use the HTTP Status Lookup

  1. Select a code from the dropdown — browse all standard HTTP status codes from 1xx to 5xx
  2. Search by keyword — type “redirect”, “timeout”, “forbidden”, “not found” to filter relevant codes
  3. View the details — each code shows its numeric value, standard name, category badge, and a plain-English description
  4. Browse by category — use the category filter to see all codes in a group (Informational, Success, Redirect, Client Error, Server Error)

Features

  • 26 common HTTP status codes — covers the most frequently encountered 1xx through 5xx codes
  • Keyword search — find codes by description or common name
  • Category grouping — Informational, Success, Redirect, Client Error, Server Error
  • Color-coded badges — visual category identification for quick scanning
  • Quick reference — all categories listed at a glance on a single page

Use Cases

  • Debugging API responses: When an API returns an unexpected status, look it up to understand what went wrong
  • SEO audits: Identify 301 (permanent redirect), 302 (temporary redirect), 404 (not found), and 410 (gone) codes in your crawl reports
  • Server configuration: When setting up redirect rules, verify you’re using the correct status code for each scenario
  • Learning HTTP: New developers can browse status codes to understand how the web works at the protocol level
  • Error investigation: When users report errors, quickly translate a numeric code into a meaningful explanation

FAQ

What’s the difference between 301 and 302 redirects?

A 301 (Moved Permanently) tells search engines the page has permanently moved — ranking signals transfer to the new URL. A 302 (Found) means the move is temporary — the original URL should keep its rankings.

When should I use 410 instead of 404?

Use 410 (Gone) when a page has been intentionally removed and won’t come back. Use 404 (Not Found) when the page might exist again or you’re unsure. Google treats 410 as a stronger signal to remove the page from its index.

What causes a 500 Internal Server Error?

A 500 error means the server encountered an unexpected condition that prevented it from fulfilling the request. Common causes include PHP fatal errors, database connection failures, and server configuration issues.

Is 200 always good?

Not necessarily. A 200 OK just means the server successfully delivered a response. The page could still have broken JavaScript, missing images, or incorrect content. Always verify the actual page content, not just the status code.

Tips

  • Bookmark codes 301, 302, 404, 410, and 503 — these are the ones you’ll use most in SEO and web development
  • Use the search feature to find codes by symptom (e.g., search “timeout” for 408 and 504)
  • When diagnosing issues, always check the server log alongside the status code for the full picture