Microsoft Edge Origin Trials Developer Console

Safely experiment for a fixed period of time and provide feedback on new platform features with Microsoft Edge origin trials

Dual-screen and foldable devices CSS and JavaScript Primitives

CSS media feature and a companion JavaScript API to help developers effectively detect dual-screen and foldable form factor and lay content out when the browser window is spanned across multiple display regions.
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Web App Protocol Handler Registration

Support registering a PWA for protocol handling via the web app manifest.
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Delegated Ink Trail Presentation

Allows web developers to leverage new primitives for improving ink latency in their applications. Latency improvements will be limited on operating systems that do not yet support delegated ink.
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