4xx Client error
414 URI Too Long
The URL is longer than the server is willing to handle.
Usually caused by putting large data into query parameters, or by a redirect loop that keeps appending parameters.
Common causes and fixes
- Send large data in a POST body instead of the query string.
- Check for redirect loops that append the same parameter repeatedly.
Example response
HTTP/1.1 414 URI Too Long
Date: Thu, 22 Oct 2026 08:00:00 GMT Check a URL’s status with curl -I https://example.com, which prints the status line and headers.