
The Popover API is now Baseline Newly available | Blog
Why we thought popover was in Baseline last year, and how we're using data to improve understanding of interoperability.
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Why we thought popover was in Baseline last year, and how we're using data to improve understanding of interoperability.

Promise.try has now landed in all major browser engines, making it Baseline Newly available.

PROXX as a minesweeper-like game built as a PWA. It works on a vast variety of devices and progressively enhances the visual appearance the more capable the device is.


An update on our plans for measuring responsiveness on the web.

Ruby on Rails' famous blog in 15 minutes now runs right in your browser thanks to WebAssembly.

Same-document view transitions (and more view transitions-related features) are Baseline Newly available as of October 14, 2025.

The Screen Wake Lock API has officially landed in all major browsers—Chrome, Safari, and Firefox.

JavaScript set methods like union and intersection are now interoperable, making set operations easier.

Learn how to use the Baseline Status web component or logos to show the Baseline status of features.

New codecs support, updated design, and CLI support!


Web styling features of today and tomorrow, as seen at Google IO 2022, plus some extras.


A look at the survey results from the State of HTML and State of CSS surveys.

Help us understand what you want in HTML.

Learn more about how to submit a proposal for Interop 2023.

Learn more about how to submit a proposal for Interop 2024.

Now that transform streams are supported in Chrome, Safari, and Firefox, they're finally ready for prime time!

Have you ever wished you could just poke the browser vendors and say, "Hey, I need this!"? Well, now you can.

New CSS units that account for mobile viewports with dynamic toolbars.

WebAssembly Garbage Collection and Wasm tail call optimizations have now landed in all major browser engines, making them Baseline Newly available.

