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- # mime-db
-
- [![NPM Version][npm-version-image]][npm-url]
- [![NPM Downloads][npm-downloads-image]][npm-url]
- [![Node.js Version][node-image]][node-url]
- [![Build Status][travis-image]][travis-url]
- [![Coverage Status][coveralls-image]][coveralls-url]
-
- This is a database of all mime types.
- It consists of a single, public JSON file and does not include any logic,
- allowing it to remain as un-opinionated as possible with an API.
- It aggregates data from the following sources:
-
- - http://www.iana.org/assignments/media-types/media-types.xhtml
- - http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
- - http://hg.nginx.org/nginx/raw-file/default/conf/mime.types
-
- ## Installation
-
- ```bash
- npm install mime-db
- ```
-
- ### Database Download
-
- If you're crazy enough to use this in the browser, you can just grab the
- JSON file using [jsDelivr](https://www.jsdelivr.com/). It is recommended to
- replace `master` with [a release tag](https://github.com/jshttp/mime-db/tags)
- as the JSON format may change in the future.
-
- ```
- https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json
- ```
-
- ## Usage
-
- ```js
- var db = require('mime-db');
-
- // grab data on .js files
- var data = db['application/javascript'];
- ```
-
- ## Data Structure
-
- The JSON file is a map lookup for lowercased mime types.
- Each mime type has the following properties:
-
- - `.source` - where the mime type is defined.
- If not set, it's probably a custom media type.
- - `apache` - [Apache common media types](http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types)
- - `iana` - [IANA-defined media types](http://www.iana.org/assignments/media-types/media-types.xhtml)
- - `nginx` - [nginx media types](http://hg.nginx.org/nginx/raw-file/default/conf/mime.types)
- - `.extensions[]` - known extensions associated with this mime type.
- - `.compressible` - whether a file of this type can be gzipped.
- - `.charset` - the default charset associated with this type, if any.
-
- If unknown, every property could be `undefined`.
-
- ## Contributing
-
- To edit the database, only make PRs against `src/custom.json` or
- `src/custom-suffix.json`.
-
- The `src/custom.json` file is a JSON object with the MIME type as the keys
- and the values being an object with the following keys:
-
- - `compressible` - leave out if you don't know, otherwise `true`/`false` to
- indicate whether the data represented by the type is typically compressible.
- - `extensions` - include an array of file extensions that are associated with
- the type.
- - `notes` - human-readable notes about the type, typically what the type is.
- - `sources` - include an array of URLs of where the MIME type and the associated
- extensions are sourced from. This needs to be a [primary source](https://en.wikipedia.org/wiki/Primary_source);
- links to type aggregating sites and Wikipedia are _not acceptable_.
-
- To update the build, run `npm run build`.
-
- ### Adding Custom Media Types
-
- The best way to get new media types included in this library is to register
- them with the IANA. The community registration procedure is outlined in
- [RFC 6838 section 5](http://tools.ietf.org/html/rfc6838#section-5). Types
- registered with the IANA are automatically pulled into this library.
-
- If that is not possible / feasible, they can be added directly here as a
- "custom" type. To do this, it is required to have a primary source that
- definitively lists the media type. If an extension is going to be listed as
- associateed with this media type, the source must definitively link the
- media type and extension as well.
-
- [coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-db/master
- [coveralls-url]: https://coveralls.io/r/jshttp/mime-db?branch=master
- [node-image]: https://badgen.net/npm/node/mime-db
- [node-url]: https://nodejs.org/en/download
- [npm-downloads-image]: https://badgen.net/npm/dm/mime-db
- [npm-url]: https://npmjs.org/package/mime-db
- [npm-version-image]: https://badgen.net/npm/v/mime-db
- [travis-image]: https://badgen.net/travis/jshttp/mime-db/master
- [travis-url]: https://travis-ci.org/jshttp/mime-db
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