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100 lines
4.0 KiB
100 lines
4.0 KiB
# mime-db |
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[![NPM Version][npm-version-image]][npm-url] |
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[![NPM Downloads][npm-downloads-image]][npm-url] |
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[![Node.js Version][node-image]][node-url] |
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[![Build Status][ci-image]][ci-url] |
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[![Coverage Status][coveralls-image]][coveralls-url] |
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This is a large database of mime types and information about them. |
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It consists of a single, public JSON file and does not include any logic, |
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allowing it to remain as un-opinionated as possible with an API. |
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It aggregates data from the following sources: |
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- http://www.iana.org/assignments/media-types/media-types.xhtml |
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- http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types |
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- http://hg.nginx.org/nginx/raw-file/default/conf/mime.types |
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## Installation |
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```bash |
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npm install mime-db |
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``` |
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### Database Download |
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If you're crazy enough to use this in the browser, you can just grab the |
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JSON file using [jsDelivr](https://www.jsdelivr.com/). It is recommended to |
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replace `master` with [a release tag](https://github.com/jshttp/mime-db/tags) |
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as the JSON format may change in the future. |
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``` |
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https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json |
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``` |
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## Usage |
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```js |
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var db = require('mime-db') |
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// grab data on .js files |
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var data = db['application/javascript'] |
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``` |
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## Data Structure |
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The JSON file is a map lookup for lowercased mime types. |
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Each mime type has the following properties: |
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- `.source` - where the mime type is defined. |
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If not set, it's probably a custom media type. |
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- `apache` - [Apache common media types](http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types) |
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- `iana` - [IANA-defined media types](http://www.iana.org/assignments/media-types/media-types.xhtml) |
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- `nginx` - [nginx media types](http://hg.nginx.org/nginx/raw-file/default/conf/mime.types) |
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- `.extensions[]` - known extensions associated with this mime type. |
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- `.compressible` - whether a file of this type can be gzipped. |
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- `.charset` - the default charset associated with this type, if any. |
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If unknown, every property could be `undefined`. |
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## Contributing |
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To edit the database, only make PRs against `src/custom-types.json` or |
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`src/custom-suffix.json`. |
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The `src/custom-types.json` file is a JSON object with the MIME type as the |
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keys and the values being an object with the following keys: |
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- `compressible` - leave out if you don't know, otherwise `true`/`false` to |
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indicate whether the data represented by the type is typically compressible. |
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- `extensions` - include an array of file extensions that are associated with |
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the type. |
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- `notes` - human-readable notes about the type, typically what the type is. |
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- `sources` - include an array of URLs of where the MIME type and the associated |
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extensions are sourced from. This needs to be a [primary source](https://en.wikipedia.org/wiki/Primary_source); |
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links to type aggregating sites and Wikipedia are _not acceptable_. |
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To update the build, run `npm run build`. |
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### Adding Custom Media Types |
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The best way to get new media types included in this library is to register |
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them with the IANA. The community registration procedure is outlined in |
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[RFC 6838 section 5](http://tools.ietf.org/html/rfc6838#section-5). Types |
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registered with the IANA are automatically pulled into this library. |
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If that is not possible / feasible, they can be added directly here as a |
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"custom" type. To do this, it is required to have a primary source that |
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definitively lists the media type. If an extension is going to be listed as |
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associateed with this media type, the source must definitively link the |
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media type and extension as well. |
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[ci-image]: https://badgen.net/github/checks/jshttp/mime-db/master?label=ci |
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[ci-url]: https://github.com/jshttp/mime-db/actions?query=workflow%3Aci |
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[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-db/master |
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[coveralls-url]: https://coveralls.io/r/jshttp/mime-db?branch=master |
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[node-image]: https://badgen.net/npm/node/mime-db |
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[node-url]: https://nodejs.org/en/download |
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[npm-downloads-image]: https://badgen.net/npm/dm/mime-db |
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[npm-url]: https://npmjs.org/package/mime-db |
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[npm-version-image]: https://badgen.net/npm/v/mime-db
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