HTTP 103 Early Hints

What 103 means

The server sends Link headers (for example preload or preconnect) while it is still generating the page, which can improve load times.

Common causes

• The server or CDN is configured to send Early Hints.

How to fix it

1. No action is needed; it is a performance feature.
2. Only hint critical resources that every visit needs.

How to check a status code

Enter a URL in the HTTP Status Checker to see its status code, every redirect hop, and response time. For redirect-heavy pages, the Website Speed Test shows how much time redirects add.

FAQ

What does HTTP 103 mean?

103 Early Hints is a 1xx informational status code. An interim response that lets the browser start preloading resources before the final response is ready.

What causes a 103 error?

The server or CDN is configured to send Early Hints.

How do I fix HTTP 103?

No action is needed; it is a performance feature. Only hint critical resources that every visit needs.