v150 · CSS · Security

CORS Header Playground

CSS URL request modifiers — cross-origin(), referrer-policy(), and integrity() — affect which HTTP headers are sent with CSS-triggered resource fetches. Configure each modifier below and see exactly which request headers are added, modified, or suppressed.

Configure URL modifiers
cross-origin()
referrer-policy()
integrity()
Resulting request headers
HTTP Header
Value sent
Modifier responsible
Select modifier values above to see how they affect the request headers.

see also

references

implementation reference

Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗