HTML5 Please is a web resource for developers built around a collection of recommendations describing browser support and suggested usage for modern browser features such as HTML5 and CSS3.
The HTML5 API pulls data from caniuse.com and matches it to a userâ€™s UA. Depending on the match, the API either tells the user that their browser is missing critical features required for the page, or simply allows the page to render normally.
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So far, we don't have a record of any changes to this API