1xx Informational
103 Early Hints
Preliminary headers — usually `Link: rel=preload` — sent before the real response so the browser can start fetching assets.
What causes it
- A server or CDN sending resource hints while the origin is still generating the page.
How to fix it
- Nothing to fix. If hints are ignored, check the client supports them and that no intermediary is buffering the response.
At a glance
- Class
- 1xx Informational
- Reference
- RFC 8297
- Standardised
- Yes
- Retry the request?
- No — fix the request