| # Welcome to MDN data |
| |
| > **Note** |
| > We are in the process of deprecating the `mdn/data` package in favor of [`w3c/webref`](https://github.com/w3c/webref). |
| > If you depend on this project, let us know in our community [GitHub discussions](https://github.com/mdn/mdn-community/discussions/categories/platform). |
| > Thank you. |
| |
| [](https://www.npmjs.com/package/mdn-data) |
| [](https://github.com/mdn/data/actions/workflows/lint.yml) |
| |
| This repository contains general data for Web technologies and is maintained by the [MDN team at Mozilla](https://wiki.mozilla.org/MDN). |
| |
| ## Repository contents |
| |
| The data in this repository is used in MDN Web Docs to build [information boxes](https://developer.mozilla.org/en-US/docs/Web/CSS/background) and [sidebar navigation](https://developer.mozilla.org/en-US/docs/Web/API/Window). |
| External tools make use of this data as well, for example, the [CSSTree](https://github.com/csstree/csstree/) CSS parser. |
| |
| There's a top-level directory for each broad area covered: for example, `api` and `css`. |
| Inside each of these directories is one or more JSON files containing the data. |
| |
| ### api |
| |
| Contains data about Web APIs: |
| |
| - API inheritance (interface inheritance and mixin implementations) |
| |
| ### css |
| |
| Contains data about: |
| |
| - CSS at-rules |
| - CSS functions |
| - CSS properties |
| - CSS selectors |
| - CSS syntaxes |
| - CSS types |
| - CSS units |
| |
| For more information, see the [CSS data](./css/README.md) documentation and the [Updating CSS JSON DB](./docs/updating_css_json.md) guide. |
| |
| ### l10n |
| |
| The l10n folder contains localization strings that are used in the various |
| json files throughout this repository. |
| |
| ## Problems? |
| |
| If you find a problem, please [file an issue](https://github.com/mdn/data/issues/new). |
| |
| ## Contributing |
| |
| We're very happy to accept contributions to this data. |
| Please familiarize yourself with the schema for the data you're editing, and send us a pull request. |
| See the [CONTRIBUTING.md](./CONTRIBUTING.md) document for more information. |
| |
| ## See also |
| |
| - [https://github.com/mdn/browser-compat-data](https://github.com/mdn/browser-compat-data) |
| for compatibility data for Web technologies |
