Read the documentation for Web Platform APIs, some of which are experimental in Chrome. For example, origin and developer trials, or features only found in Canary.
Available Origin Trials Chrome Platform status
Learn how Chrome uses Canary, Dev, Beta, and Stable release channels to test new features, and roll out updates.
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Activate additional debugging tools, or try out new or experimental features.
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Test new features or changes to the Chrome browser or Chrome OS which runs on Chromebooks.
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Shipped APIs

Page Lifecycle API

The Page Lifecycle API provides lifecycle hooks so your pages can safely handle these browser interventions without affecting the user experience.
Early Hints is an HTTP status code (103 Early Hints) used to send a preliminary HTTP response ahead of a final response.
Display arbitrary HTML content in an always-on-top window.
Conditionally focus a tab or window when screen sharing on the web.
Guide the user away from oversharing thanks to privacy-preserving screen sharing controls on the web.
The web platform now ships with Capture Handle, a mechanism that allows a capturing web app to ergonomically and confidently identify the captured web app, if the captured web app has opted-in.
The Handwriting Recognition API allows web applications to use advanced handwriting recognition services to recognize text from handwritten input in real time.
Discover modern client-side routing with the Navigation API, which adds improved functionality to build single-page applications.
The web platform now ships with Region Capture, a performant and robust way for cropping a video track.
Manage yourself the browser deals with content occlusion when a touch device's virtual keyboard appears.
Allow page transitions within single-page apps.
Use the Speculation Rules API to achieve near-instant page navigations
Use the Long Animation Frames API to identify slow animation frames which are likely to affect the Interaction to Next Paint (INP) Core Web Vital metric which measures responsiveness.
Report information on whether a page was blocked from using the back/forward cache on navigation.
Test a new or experimental web platform feature.
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Providers of embedded content can test new or experimental web platform features.
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Address common problems with Chrome trial tokens in meta tags, headers, and scripts.
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Origin trials

Origin trials allow developers to try out new features and give feedback.
The Captured Surface Control API lets web apps scroll and zoom captured tabs.
The Element Capture API is a performant and robust way for transforming a capture of the current tab into a capture of a DOM subtree.
Control how your app is launched, for example, whether it uses an existing or a new window and whether the chosen window is navigated to the launch URL.
Experimenting with JavaScript-driven same-document navigations that use the history API or the new Navigation API, triggered by a user gesture and modifies the DOM, modifying the previous content, as well as the URL displayed to the user.
Allow your implementation to use the right underlying hardware metrics to ensure that users can take advantage of all the processing power available to them

Deprecating

These features were part of the web platform but are now in the process of being deprecated and removed.
The unload event will be gradually deprecated starting from Chrome 117. Learn what this means and how sites and enterprises can prepare for this

No longer pursuing

These features are no longer supported nor in experiment.
Determine declaratively what happens when the browser is asked to navigate to a URL.
Gain direct access to stored data through buffers and offsets.
Schedule local notifications that don't require a network connection
Share websites as a single file over Bluetooth.

Best Practices

Learn how to make the most of certain web platform features.
After registering a PWA as a protocol handler, when a user clicks on a hyperlink with a specific scheme such as mailto, bitcoin, or web+music from a browser or a platform-specific app, the registered PWA will open and receive the URL.
Work with components of a video stream, such as frames and unmixed chunks of encoded video or audio.