# Resources for Developers,
by Developers

Documenting CSS, HTML, and JavaScript, since 2005.

## Featured articles

- Blog

  ### Celebrating 20 years of MDN

  MDN turns 20! Let's look at how we started, how MDN became the most trusted resource for web developers, the impact it's had on the open web, and yes, there's cake, too.

- Web APIs

  ### Navigation API

  The Navigation API provides the ability to initiate, intercept, and manage browser navigation actions. It can also examine an application's history entries. This is a successor to previous web platform features such as the History API and window.location, which solves their shortcomings and is specifically aimed at the needs of single-page applications (SPAs).

- Web APIs

  ### Trusted Types API

  The Trusted Types API gives web developers a way to ensure that input has been passed through a user-specified transformation function before being passed to an API that might execute that input. This can help to protect against client-side cross-site scripting (XSS) attacks. Most commonly the transformation function sanitizes the input.

- CSS

  ### Using CSS anchor positioning

  The CSS anchor positioning module defines features that allow you to tether elements together. Elements can be defined as anchor elements and anchor-positioned elements. Anchor-positioned elements can be bound to anchor elements. The anchor-positioned elements can then have their size and position set relative to the size and location of the anchor elements to which they are bound.

## Latest news

- developer.mozilla.org

  ### Introducing the MDN MCP server

  2 days ago

  MDN's MCP server brings MDN's documentation and browser compatibility data directly into your editor or IDE, giving your LLM or coding agent access to accurate, up-to-date web platform information.

- developer.mozilla.org

  ### Under the hood of MDN's new frontend

  2 months ago

  You may have spotted that MDN has a new frontend. There's plenty happening under the surface, so let's unpack the technologies we chose, the architectural decisions we made, and why we did a rebuild at all.

- developer.mozilla.org

  ### Image formats: Codecs and compression tools

  7 months ago

  Image compression involves countless trade-offs between quality, size, and speed. In this final part of the series, we experiment with codecs, metrics, and tools to find practical ways to balance efficiency and visual fidelity.

- developer.mozilla.org

  ### A beginner-friendly guide to view transitions in CSS

  8 months ago

  Learn how to bring smooth, animated navigation to multi-page apps with view transitions. With just one line of CSS, you can enable seamless transitions between pages.

## Recent contributions

- mdn/content 14 hours ago
  Make it clear we're supporting the whole notification actions feature
- mdn/content 13 hours ago
  Update support notices for prefers-reduced-data
- mdn/content 11 hours ago
  added release note for base-select value for appearance property
- mdn/content 11 hours ago
  added reelease notes for timeline-range-name in @keyframes
- mdn/content 11 hours ago
  Finalize release notes for Firefox 152
- mdn/translated-content 5 hours ago
  fix(es): complete SubtleCrypto encrypt() and generateKey() Spanish translations
- mdn/translated-content 5 hours ago
  [es] Corrige el título y actualiza los metadatos de la plantilla de p…
- mdn/translated-content 3 hours ago
  chore(fr): update of `Learn_web_development/Core/Styling_basics/Debugging_CSS`
- mdn/translated-content 3 hours ago
  chore(fr): translation of `Learn_web_development/Core/Styling_basics/Home_color_scheme_search`
- mdn/translated-content 3 hours ago
  chore(fr): sync latest ff152 changes in notes