4xx Client Errors
HTTP 414 URI Too Long
The request URI is longer than the server is willing to interpret.
When is 414 used?
- Excessively long query strings
- GET requests with large form data
How to handle a 414 response
Inspect the request — URL, method, headers, credentials, and body. Retrying the same request unchanged will usually fail again; 429 is the exception, where you should wait for the Retry-After period.
Check the status code a URL returns from the command line:
curl -s -o /dev/null -w "%{http_code}\n" https://example.comHow to return 414 from your server
Node.js (Express)
res.status(414).json({ message: 'URI Too Long' });Python (Flask)
return {"message": "URI Too Long"}, 414Go (net/http)
w.WriteHeader(414)Frequently Asked Questions
What does HTTP 414 mean?
414 URI Too Long: The request URI is longer than the server is willing to interpret.
Is 414 an error?
Yes. 414 is in the 4xx Client Errors class. Client errors: the request is malformed, unauthorized, or targets something that does not exist.