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+# normalize-url [![Build Status](https://travis-ci.org/sindresorhus/normalize-url.svg?branch=master)](https://travis-ci.org/sindresorhus/normalize-url) [![Coverage Status](https://coveralls.io/repos/github/sindresorhus/normalize-url/badge.svg?branch=master)](https://coveralls.io/github/sindresorhus/normalize-url?branch=master)
+
+> [Normalize](https://en.wikipedia.org/wiki/URL_normalization) a URL
+
+Useful when you need to display, store, deduplicate, sort, compare, etc, URLs.
+
+
+## Install
+
+```
+$ npm install normalize-url
+```
+
+
+## Usage
+
+```js
+const normalizeUrl = require('normalize-url');
+
+normalizeUrl('sindresorhus.com');
+//=> 'http://sindresorhus.com'
+
+normalizeUrl('HTTP://xn--xample-hva.com:80/?b=bar&a=foo');
+//=> 'http://êxample.com/?a=foo&b=bar'
+```
+
+
+## API
+
+### normalizeUrl(url, options?)
+
+#### url
+
+Type: `string`
+
+URL to normalize, including [data URL](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs).
+
+#### options
+
+Type: `object`
+
+##### defaultProtocol
+
+Type: `string`<br>
+Default: `http:`
+
+##### normalizeProtocol
+
+Type: `boolean`<br>
+Default: `true`
+
+Prepend `defaultProtocol` to the URL if it's protocol-relative.
+
+```js
+normalizeUrl('//sindresorhus.com:80/');
+//=> 'http://sindresorhus.com'
+
+normalizeUrl('//sindresorhus.com:80/', {normalizeProtocol: false});
+//=> '//sindresorhus.com'
+```
+
+##### forceHttp
+
+Type: `boolean`<br>
+Default: `false`
+
+Normalize `https:` to `http:`.
+
+```js
+normalizeUrl('https://sindresorhus.com:80/');
+//=> 'https://sindresorhus.com'
+
+normalizeUrl('https://sindresorhus.com:80/', {forceHttp: true});
+//=> 'http://sindresorhus.com'
+```
+
+##### forceHttps
+
+Type: `boolean`<br>
+Default: `false`
+
+Normalize `http:` to `https:`.
+
+```js
+normalizeUrl('https://sindresorhus.com:80/');
+//=> 'https://sindresorhus.com'
+
+normalizeUrl('http://sindresorhus.com:80/', {forceHttps: true});
+//=> 'https://sindresorhus.com'
+```
+
+This option can't be used with the `forceHttp` option at the same time.
+
+##### stripAuthentication
+
+Type: `boolean`<br>
+Default: `true`
+
+Strip the [authentication](https://en.wikipedia.org/wiki/Basic_access_authentication) part of the URL.
+
+```js
+normalizeUrl('user:password@sindresorhus.com');
+//=> 'https://sindresorhus.com'
+
+normalizeUrl('user:password@sindresorhus.com', {stripAuthentication: false});
+//=> 'https://user:password@sindresorhus.com'
+```
+
+##### stripHash
+
+Type: `boolean`<br>
+Default: `false`
+
+Strip the hash part of the URL.
+
+```js
+normalizeUrl('sindresorhus.com/about.html#contact');
+//=> 'http://sindresorhus.com/about.html#contact'
+
+normalizeUrl('sindresorhus.com/about.html#contact', {stripHash: true});
+//=> 'http://sindresorhus.com/about.html'
+```
+
+##### stripProtocol
+
+Type: `boolean`<br>
+Default: `false`
+
+Remove HTTP(S) protocol from the URL: `http://sindresorhus.com` → `sindresorhus.com`.
+
+```js
+normalizeUrl('https://sindresorhus.com');
+//=> 'https://sindresorhus.com'
+
+normalizeUrl('sindresorhus.com', {stripProtocol: true});
+//=> 'sindresorhus.com'
+```
+
+##### stripWWW
+
+Type: `boolean`<br>
+Default: `true`
+
+Remove `www.` from the URL.
+
+```js
+normalizeUrl('http://www.sindresorhus.com');
+//=> 'http://sindresorhus.com'
+
+normalizeUrl('http://www.sindresorhus.com', {stripWWW: false});
+//=> 'http://www.sindresorhus.com'
+```
+
+##### removeQueryParameters
+
+Type: `Array<RegExp | string>`<br>
+Default: `[/^utm_\w+/i]`
+
+Remove query parameters that matches any of the provided strings or regexes.
+
+```js
+normalizeUrl('www.sindresorhus.com?foo=bar&ref=test_ref', {
+	removeQueryParameters: ['ref']
+});
+//=> 'http://sindresorhus.com/?foo=bar'
+```
+
+##### removeTrailingSlash
+
+Type: `boolean`<br>
+Default: `true`
+
+Remove trailing slash.
+
+**Note:** Trailing slash is always removed if the URL doesn't have a pathname.
+
+```js
+normalizeUrl('http://sindresorhus.com/redirect/');
+//=> 'http://sindresorhus.com/redirect'
+
+normalizeUrl('http://sindresorhus.com/redirect/', {removeTrailingSlash: false});
+//=> 'http://sindresorhus.com/redirect/'
+
+normalizeUrl('http://sindresorhus.com/', {removeTrailingSlash: false});
+//=> 'http://sindresorhus.com'
+```
+
+##### removeDirectoryIndex
+
+Type: `boolean | Array<RegExp | string>`<br>
+Default: `false`
+
+Removes the default directory index file from path that matches any of the provided strings or regexes. When `true`, the regex `/^index\.[a-z]+$/` is used.
+
+```js
+normalizeUrl('www.sindresorhus.com/foo/default.php', {
+	removeDirectoryIndex: [/^default\.[a-z]+$/]
+});
+//=> 'http://sindresorhus.com/foo'
+```
+
+##### sortQueryParameters
+
+Type: `boolean`<br>
+Default: `true`
+
+Sorts the query parameters alphabetically by key.
+
+```js
+normalizeUrl('www.sindresorhus.com?b=two&a=one&c=three', {
+	sortQueryParameters: false
+});
+//=> 'http://sindresorhus.com/?b=two&a=one&c=three'
+```
+
+
+## Related
+
+- [compare-urls](https://github.com/sindresorhus/compare-urls) - Compare URLs by first normalizing them
+
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-normalize-url?utm_source=npm-normalize-url&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>