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

VirtualKeyboardPolicy

Provides an API surface to control when the virtual keyboard is shown on the page.
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Pen Events

Allows web developers to handle the event that is dispatched by the browser when it receives a signal describing pen interactions outside of the scope of the PointerEvent. These interactions, produced by Windows Ink compatible pens, can be either a button-press gesture or when a pen is docked and undocked.
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Web App File Type Registration

Support registering a PWA for file type handling via the web app manifest. Requires Windows 10 OS build 2004 or newer.
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Web App File Activation with local file read

Support PWA activation via file type open when PWA has been registered to handle those file types. Requires Windows 10 OS build 2004 or newer.
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JS Self-Profiling API

A web-exposed sampling profiler for measuring client JavaScript execution time.
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Canvas2d Context Lost event

Introduces an API that allows canvases to be discarded by the browser and re-drawn by the web application on demand.
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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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