HTTP 103 Early Hints vs 300 Multiple Choices
HTTP 103 (Early Hints) is a 1xx Informational response, while 300 (Multiple Choices) is a 3xx Redirection response. 103 indicates that used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response. In contrast, 300 means that the request has more than one possible response. The client should choose one of them.
Description
Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
When You See It
When a server wants the browser to start loading CSS/JS before the full response is ready.
How to Fix
No fix needed. This optimization helps speed up page loading.
Description
The request has more than one possible response. The client should choose one of them.
When You See It
When a resource is available in multiple formats (e.g., different languages or media types).
How to Fix
Select the appropriate resource variant. Send an Accept header with your preferred content type.
Key Differences
103 is a 1xx Informational response, while 300 is a 3xx Redirection response.
HTTP 103: Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
HTTP 300: The request has more than one possible response. The client should choose one of them.
You encounter 103 when when a server wants the browser to start loading CSS/JS before the full response is ready.
You encounter 300 when when a resource is available in multiple formats (e.g., different languages or media types).
When to Use Which
For 103 (Early Hints): No fix needed. This optimization helps speed up page loading. For 300 (Multiple Choices): Select the appropriate resource variant. Send an Accept header with your preferred content type.