Update link rel preload to reflect browser support#32740
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sideshowbarker merged 2 commits intomdn:mainfrom Mar 19, 2024
Merged
Update link rel preload to reflect browser support#32740sideshowbarker merged 2 commits intomdn:mainfrom
sideshowbarker merged 2 commits intomdn:mainfrom
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(comment last updated: 2024-03-19 11:29:16) |
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Description
<link rel=preload>only works with certainastypes currently so this section is wrong:https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/rel/preload#what_types_of_content_can_be_preloaded
See example here: https://resource-loading-examples.glitch.me/preload-types.html
(tested in Chrome 123, Firefox 123, and Safari 17.4)
<video>is also NOT one of theastypes supported by any browser so this section is also wrong as the example doesn't work:https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/rel/preload#including_a_mime_type
It should be replaced with image type instead
Update the link rel preload doc to reflect browser support.
Motivation
Have received several requests as to why this is not supported in Chrome. But it's not supported in ANY browser.
Additional details
You can test yourself with this example here: https://resource-loading-examples.glitch.me/preload-types.html
Related issues and pull requests
Also raised a spec discussion here:
whatwg/html#8332 (comment)
And a caniuse request here: Fyrd/caniuse#7006
Will raise a BCD update next and update this note. (Edit: raised mdn/browser-compat-data#22658)