I've documented the Translator and Language Detector APIs on MDN, which detect a text string's language and translate it to another language using a browser's internal AI model: https://developer.mozilla.org/en-US/docs/Web/API/Translator_and_Language_Detector_APIs

I've documented the Summarizer API on MDN, which summarizes a body of text using a browser's internal AI model: https://developer.mozilla.org/en-US/docs/Web/API/Summarizer_API

New on MDN, I've documented all-new, fully-customizable <select> elements: https://developer.mozilla.org/en-US/docs/Learn_web_development/Extensions/Forms/Customizable_select. Thanks to everyone who provided reviews!

I've documented the FileSystemObserver API on MDN, which provides an easy way to observe file system changes: see https://developer.mozilla.org/en-US/docs/Web/API/FileSystemObserver. Thanks to Will from @openwebdocs for the reviewing work!

I've documented the Element and Region Capture extensions for the Screen Capture API on MDN: Get started at https://developer.mozilla.org/en-US/docs/Web/API/Screen_Capture_API/Element_Region_Capture. Thanks to Will from @openwebdocs and François from Google for the reviews!

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I've documented the Device Posture API on MDN, which allows you to query the folded state of foldable devices, and run code in response. See https://developer.mozilla.org/en-US/docs/Web/API/Device_Posture_API. Thanks to @estelle from Open Web Docs and @darktears for their review work.

I am trying to figure out how to run a WebDriver extension command via the selenium-webdriver Node.js library, but am really struggling to find any examples or information. Does anyone here have any experience in this regard?

I've documented two new WebAssembly features on MDN: JS builtins and imported global string constants. See https://developer.mozilla.org/en-US/docs/WebAssembly/JavaScript_builtins and https://developer.mozilla.org/en-US/docs/WebAssembly/Imported_string_constants!

One of our major bits of work for 2024 has landed — a major restructure of the MDN learn web development content, to make it into a structured learning pathway, add learning objectives, and more! https://developer.mozilla.org/en-US/docs/Learn_web_development Expect to see a lot more improvements in 2025.

Today is an Electric Wizard day. I'm going to keep doing my work slower and slower until Friday is complete.

More new MDN content! I've documented CSS scroll snap events, which allow you to respond via JS to pending or chosen snap targets. Find out more here: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_scroll_snap/Using_scroll_snap_events. Again, thanks to @estelle for the awesome review work.

I have documented the new CSS calc-size() function (https://developer.mozilla.org/en-US/docs/Web/CSS/calc-size) and interpolate-size property (https://developer.mozilla.org/en-US/docs/Web/CSS/interpolate-size#browser_compatibility) on MDN. These enable animation to/from and calculations involving intrinsic size values. Thanks to @estelle for the review!

I've published WebSocketStream documentation on MDN: New experimental WebSocket connections powered by the Streams API! Get started with the guide: https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Using_WebSocketStream. Thanks to Will from @openwebdocs for the content review.

New on MDN: I've published updates to the Visual Viewport API, including a better example and coverage of the scrollend event. See https://developer.mozilla.org/en-US/docs/Web/API/Visual_Viewport_API. Thanks to @wbamberg for his excellent review work.

The File System API now has experimental locking modes that can be used when creating writers and sync access handles. Find out more at https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileHandle/createWritable#mode and https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileHandle/createSyncAccessHandle#mode

I've documented service worker static routing on MDN, aka InstallEvent.addRoutes(): https://developer.mozilla.org/en-US/docs/Web/API/InstallEvent/addRoutes. Use this to improve performance, for example, bypassing SW startup when you always want to fetch a certain resource from the network.

This is a big one — @estelle and I have got CSS Anchor Positioning's inset-area property and value type documented on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/inset-area. Use this to place anchor-positioned elements relative to an anchor, based on a 3x3 grid model.

The CSS Anchor Positioning anchor-size() function is now documented on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/anchor-size

Mozilla's HTTP Observatory tool has been updated and migrated to MDN: https://developer.mozilla.org/en-US/observatory. I worked on the copy and associated documentation — this was a great project to work on, and I'm proud of the results. Try it out!

New on MDN, written by yours truly — the View Transitions docs are now updated to cover the cross-document transitions functionality. Start here: https://developer.mozilla.org/en-US/docs/Web/API/View_Transitions_API. Thanks to @bramus and @pepelsbey for the reviews!