413 Content Too Large

What causes this error

The uploaded file or request payload exceeds the maximum size allowed by the server. This limit is typically set in the web server config (e.g., nginx client_max_body_size, Apache LimitRequestBody) or application framework.

How to fix it

Reduce the size of the request body. Compress files before uploading. If you control the server, increase the body size limit. For large files, implement multipart/chunked upload.

// Uploading a file larger than server allows
const form = new FormData(); form.append('file', hugeFile);