Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/jshttp/mime-types
The ultimate javascript content-type utility.
https://github.com/jshttp/mime-types
javascript mime mime-types nodejs
Last synced: 5 days ago
JSON representation
The ultimate javascript content-type utility.
- Host: GitHub
- URL: https://github.com/jshttp/mime-types
- Owner: jshttp
- License: mit
- Created: 2014-05-02T15:54:18.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2025-01-02T07:01:47.000Z (9 days ago)
- Last Synced: 2025-01-03T23:02:05.590Z (8 days ago)
- Topics: javascript, mime, mime-types, nodejs
- Language: JavaScript
- Homepage:
- Size: 232 KB
- Stars: 1,344
- Watchers: 22
- Forks: 131
- Open Issues: 10
-
Metadata Files:
- Readme: README.md
- Changelog: HISTORY.md
- License: LICENSE
Awesome Lists containing this project
- awesome - jshttp/mime-types - The ultimate javascript content-type utility. (JavaScript)
- awesome-github-star - mime-types - type utility. | jshttp | 1225 | (JavaScript)
README
# mime-types
[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-url]
[![Node.js Version][node-version-image]][node-version-url]
[![Build Status][ci-image]][ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
The ultimate javascript content-type utility.
Similar to [the `[email protected]` module](https://www.npmjs.com/package/mime), except:
- __No fallbacks.__ Instead of naively returning the first available type,
`mime-types` simply returns `false`, so do
`var type = mime.lookup('unrecognized') || 'application/octet-stream'`.
- No `new Mime()` business, so you could do `var lookup = require('mime-types').lookup`.
- No `.define()` functionality
- Bug fixes for `.lookup(path)`
Otherwise, the API is compatible with `mime` 1.x.
## Install
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
```sh
$ npm install mime-types
```
## Note on MIME Type Data and Semver
This package considers the programmatic api as the semver compatibility. Additionally, the package which provides the MIME data
for this package (`mime-db`) *also* considers it's programmatic api as the semver contract. This means the MIME type resolution is *not* considered
in the semver bumps.
In the past the version of `mime-db` was pinned to give two decision points when adopting MIME data changes. This is no longer true. We still update the
`mime-db` package here as a `minor` release when necessary, but will use a `^` range going forward. This means that if you want to pin your `mime-db` data
you will need to do it in your application. While this expectation was not set in docs until now, it is how the pacakge operated, so we do not feel this is
a breaking change.
If you wish to pin your `mime-db` version you can do that with overrides via your package manager of choice. See their documentation for how to correctly configure that.
## Adding Types
All mime types are based on [mime-db](https://www.npmjs.com/package/mime-db),
so open a PR there if you'd like to add mime types.
## API
```js
var mime = require('mime-types')
```
All functions return `false` if input is invalid or not found.
### mime.lookup(path)
Lookup the content-type associated with a file.
```js
mime.lookup('json') // 'application/json'
mime.lookup('.md') // 'text/markdown'
mime.lookup('file.html') // 'text/html'
mime.lookup('folder/file.js') // 'application/javascript'
mime.lookup('folder/.htaccess') // false
mime.lookup('cats') // false
```
### mime.contentType(type)
Create a full content-type header given a content-type or extension.
When given an extension, `mime.lookup` is used to get the matching
content-type, otherwise the given content-type is used. Then if the
content-type does not already have a `charset` parameter, `mime.charset`
is used to get the default charset and add to the returned content-type.
```js
mime.contentType('markdown') // 'text/x-markdown; charset=utf-8'
mime.contentType('file.json') // 'application/json; charset=utf-8'
mime.contentType('text/html') // 'text/html; charset=utf-8'
mime.contentType('text/html; charset=iso-8859-1') // 'text/html; charset=iso-8859-1'
// from a full path
mime.contentType(path.extname('/path/to/file.json')) // 'application/json; charset=utf-8'
```
### mime.extension(type)
Get the default extension for a content-type.
```js
mime.extension('application/octet-stream') // 'bin'
```
### mime.charset(type)
Lookup the implied default charset of a content-type.
```js
mime.charset('text/markdown') // 'UTF-8'
```
### var type = mime.types[extension]
A map of content-types by extension.
### [extensions...] = mime.extensions[type]
A map of extensions by content-type.
## License
[MIT](LICENSE)
[ci-image]: https://badgen.net/github/checks/jshttp/mime-types/master?label=ci
[ci-url]: https://github.com/jshttp/mime-types/actions/workflows/ci.yml
[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-types/master
[coveralls-url]: https://coveralls.io/r/jshttp/mime-types?branch=master
[node-version-image]: https://badgen.net/npm/node/mime-types
[node-version-url]: https://nodejs.org/en/download
[npm-downloads-image]: https://badgen.net/npm/dm/mime-types
[npm-url]: https://npmjs.org/package/mime-types
[npm-version-image]: https://badgen.net/npm/v/mime-types