HTTP 411 Length Required vs 413 Content Too Large
Both HTTP 411 (Length Required) and 413 (Content Too Large) belong to the 4xx Client Error category. 411 indicates that the server refuses to accept the request without a Content-Length header. Meanwhile, 413 means that the request payload exceeds the server's size limit.
Description
The server refuses to accept the request without a Content-Length header.
When You See It
When sending a request body without specifying Content-Length.
How to Fix
Include a Content-Length header in your request.
Description
The request payload exceeds the server's size limit.
When You See It
When uploading files that exceed the server's maximum upload size.
How to Fix
Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody).
Key Differences
HTTP 411: The server refuses to accept the request without a Content-Length header.
HTTP 413: The request payload exceeds the server's size limit.
You encounter 411 when when sending a request body without specifying Content-Length.
You encounter 413 when when uploading files that exceed the server's maximum upload size.
When to Use Which
For 411 (Length Required): Include a Content-Length header in your request. For 413 (Content Too Large): Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody).