html attribute value
`rel="compression-dictionary"` HTML attribute value
Limited availability
The compression-dictionary keyword for the rel attribute of the <link> element is a link that browsers can use to download a compression dictionary that can be used to compress future downloads for resources on this site so the download sizes of those resources are smaller than standard compression.
Note: if the website has a Content-Security-Policy header, the connect-src directive (or default-src, if connect-src is not set) must permit the location of the dictionary resource to avoid the request being blocked.
See the Compression Dictionary Transport guide for more information.
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.