HTTP 416 Range Not Satisfiable

What does HTTP 416 mean?

The byte range requested with Range is outside the resource. Happens when a download manager resumes a file that has since changed or shrunk, or when a player requests bytes beyond the end of a media file.

4xx Client error: The request has a problem the client can fix: wrong URL, missing credentials, bad data or too many requests.

How to fix 416 Range Not Satisfiable

• Restart the download without the Range header.

416 and SEO

No SEO impact.

Example response

HTTP/1.1 416 Range Not Satisfiable
Content-Range: bytes */146515

How to return a 416 response

Node.js (Express)

res.status(416).json({ error: 'Range Not Satisfiable' });

PHP

http_response_code(416);

Python (Flask)

return {'error': 'Range Not Satisfiable'}, 416

Go (net/http)

w.WriteHeader(416)

nginx

return 416;

Related status codes

• 206 Partial Content — The server is delivering only the byte range the client asked for with a Range header.
• 200 OK — The request succeeded and the response body contains the requested resource.

Check which status code a URL returns with the HTTP header checker.