Content Too Large

4xx Client Error

ELI5

The file or data you're trying to send is too big for me to handle. Please make it smaller.

Use 413 when the request content is larger than the limits the server is willing or able to process.

•Return 413 for oversized uploads, bodies, or request content limits
•Use Retry-After only when the refusal is temporary rather than purely size-based
•File uploads exceeding size limits
•Request body too large for processing
•JSON/XML payloads over server limits
•Form data exceeding allowed size

•Document size limits clearly and enforce them consistently
•Explain whether the client should compress, chunk, resize, or choose another upload path

•Include the relevant size limit or upload policy when that helps the client choose a smaller request.

•Do not use 413 for oversized headers or URIs; use 431 or 414 instead
•Do not suggest a time-based retry unless waiting could actually change the outcome
•Headers too large (use 431 Request Header Fields Too Large)
•URI too long (use 414 URI Too Long)
•Bad request format (use 400 Bad Request)

Request:

POST https://api.example.test/api/upload

# Body
<50MB binary payload>

Response:

413 Content Too Large

# Headers
Content-Type: application/json

# Body
{
  "error": "content_too_large"
}

File exceeds the server's 10MB upload limit

Your request doesn't make sense or has mistakes in it. Check what you're sending and try again.

Your request headers (the extra information like cookies) are too big for me to handle. Clean up your cookies or make the headers smaller.

The web address (URL) you're using is too long for me to handle. Please make it shorter or use a different method.