# New to the web platform in May

DevFeed: [New to the web platform in May](<https://devfeed.tech/articles/new-to-the-web-platform-in-may-4174.md>)

Original publisher: [Read original article](<https://web.dev/blog/web-platform-05-2026?hl=en>)

Author: Rachel Andrew GitHub LinkedIn Mastodon Bluesky Homepage

Published: 2026-05-29T07:00:00Z

Content type: article

Language: en

Sources: [web.dev: Blog](<https://devfeed.tech/sources/web-dev-blog.md>)

Topics: [Web platform](<https://devfeed.tech/topics/web-platform.md>), [Web](<https://devfeed.tech/topics/web.md>), [browsers](<https://devfeed.tech/topics/browsers.md>), [web browsers](<https://devfeed.tech/topics/web-browsers.md>), [CSS](<https://devfeed.tech/topics/css.md>), [HTML](<https://devfeed.tech/topics/html.md>), [picture-in-picture](<https://devfeed.tech/topics/picture-in-picture.md>), [API](<https://devfeed.tech/topics/api.md>), [Chrome](<https://devfeed.tech/topics/chrome.md>), [Firefox](<https://devfeed.tech/topics/firefox.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [audio](<https://devfeed.tech/tags/audio.md>), [browsers](<https://devfeed.tech/tags/browsers.md>), [chrome](<https://devfeed.tech/tags/chrome.md>), [css](<https://devfeed.tech/tags/css.md>), [firefox](<https://devfeed.tech/tags/firefox.md>), [html](<https://devfeed.tech/tags/html.md>), [performance](<https://devfeed.tech/tags/performance.md>), [picture-in-picture](<https://devfeed.tech/tags/picture-in-picture.md>), [web](<https://devfeed.tech/tags/web.md>), [web-browsers](<https://devfeed.tech/tags/web-browsers.md>), [web-platform](<https://devfeed.tech/tags/web-platform.md>)

## AI overview

A roundup of notable web platform features that became available in stable or beta browsers during May 2026, including CSS pseudo-classes, name-only container queries, container style queries for custom properties, native lazy loading for video and audio, and the Document Picture-in-Picture API.

## Source excerpt

Discover some of the interesting features that have landed in stable and beta web browsers during May 2026.