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normalize-url

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normalize-url

Normalize a URL


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Package description

What is normalize-url?

The normalize-url npm package is used to normalize and sanitize URLs to ensure they have a standard and consistent format. It can be used to remove tracking parameters, sort query parameters, remove default ports, and more.

What are normalize-url's main functionalities?

Normalizing URLs

This feature allows you to normalize a URL by converting it to a standard format. It can remove or add 'http://', sort query parameters, and convert the hostname to lowercase.

"use strict";
const normalizeUrl = require('normalize-url');

console.log(normalizeUrl('sindresorhus.com')); // Output: 'http://sindresorhus.com'
console.log(normalizeUrl('HTTP://xn--xample-hva.com:80/?b=bar&a=foo')); // Output: 'http://êxample.com/?a=foo&b=bar'"

Removing URL Tracking Parameters

This feature allows you to remove URL tracking parameters like 'utm_source' and 'utm_medium' by using a regular expression.

"use strict";
const normalizeUrl = require('normalize-url');

console.log(normalizeUrl('www.sindresorhus.com?utm_source=foo&utm_medium=bar', {removeQueryParameters: [/^utm_/]})); // Output: 'http://sindresorhus.com'"

Removing Default Ports

This feature removes the default ports from URLs (port 80 for HTTP and port 443 for HTTPS).

"use strict";
const normalizeUrl = require('normalize-url');

console.log(normalizeUrl('http://sindresorhus.com:80')); // Output: 'http://sindresorhus.com'
console.log(normalizeUrl('https://sindresorhus.com:443')); // Output: 'https://sindresorhus.com'"

Forcing HTTPS

This feature allows you to force the URL to use HTTPS instead of HTTP.

"use strict";
const normalizeUrl = require('normalize-url');

console.log(normalizeUrl('http://sindresorhus.com', {forceHttps: true})); // Output: 'https://sindresorhus.com'"

Other packages similar to normalize-url

Readme

Source

normalize-url Coverage Status

Normalize a URL

Useful when you need to display, store, deduplicate, sort, compare, etc, URLs.

Note: This package does not do URL sanitization. Garbage in, garbage out. If you use this in a server context and accept URLs as user input, it's up to you to protect against invalid URLs, path traversal attacks, etc.

Install

npm install normalize-url

If you need Safari support, use version 4: npm i normalize-url@4

Usage

import normalizeUrl from 'normalize-url';

normalizeUrl('sindresorhus.com');
//=> 'http://sindresorhus.com'

normalizeUrl('//www.sindresorhus.com:80/../baz?b=bar&a=foo');
//=> 'http://sindresorhus.com/baz?a=foo&b=bar'

API

normalizeUrl(url, options?)

URLs with custom protocols are not normalized and just passed through by default. Supported protocols are: https, http, file, and data.

url

Type: string

URL to normalize, including data URL.

options

Type: object

defaultProtocol

Type: string
Default: 'http'
Values: 'https' | 'http'

normalizeProtocol

Type: boolean
Default: true

Prepend defaultProtocol to the URL if it's protocol-relative.

normalizeUrl('//sindresorhus.com');
//=> 'http://sindresorhus.com'

normalizeUrl('//sindresorhus.com', {normalizeProtocol: false});
//=> '//sindresorhus.com'
forceHttp

Type: boolean
Default: false

Normalize HTTPS to HTTP.

normalizeUrl('https://sindresorhus.com');
//=> 'https://sindresorhus.com'

normalizeUrl('https://sindresorhus.com', {forceHttp: true});
//=> 'http://sindresorhus.com'
forceHttps

Type: boolean
Default: false

Normalize HTTP to HTTPS.

normalizeUrl('http://sindresorhus.com');
//=> 'http://sindresorhus.com'

normalizeUrl('http://sindresorhus.com', {forceHttps: true});
//=> 'https://sindresorhus.com'

This option cannot be used with the forceHttp option at the same time.

stripAuthentication

Type: boolean
Default: true

Strip the authentication part of the URL.

normalizeUrl('user:password@sindresorhus.com');
//=> 'https://sindresorhus.com'

normalizeUrl('user:password@sindresorhus.com', {stripAuthentication: false});
//=> 'https://user:password@sindresorhus.com'
stripHash

Type: boolean
Default: false

Strip the hash part of the URL.

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
Default: false

Remove the protocol from the URL: http://sindresorhus.comsindresorhus.com.

It will only remove https:// and http:// protocols.

normalizeUrl('https://sindresorhus.com');
//=> 'https://sindresorhus.com'

normalizeUrl('https://sindresorhus.com', {stripProtocol: true});
//=> 'sindresorhus.com'
stripTextFragment

Type: boolean
Default: true

Strip the text fragment part of the URL.

Note: The text fragment will always be removed if the stripHash option is set to true, as the hash contains the text fragment.

normalizeUrl('http://sindresorhus.com/about.html#:~:text=hello');
//=> 'http://sindresorhus.com/about.html#'

normalizeUrl('http://sindresorhus.com/about.html#section:~:text=hello');
//=> 'http://sindresorhus.com/about.html#section'

normalizeUrl('http://sindresorhus.com/about.html#:~:text=hello', {stripTextFragment: false});
//=> 'http://sindresorhus.com/about.html#:~:text=hello'

normalizeUrl('http://sindresorhus.com/about.html#section:~:text=hello', {stripTextFragment: false});
//=> 'http://sindresorhus.com/about.html#section:~:text=hello'
stripWWW

Type: boolean
Default: true

Remove www. from the URL.

normalizeUrl('http://www.sindresorhus.com');
//=> 'http://sindresorhus.com'

normalizeUrl('http://www.sindresorhus.com', {stripWWW: false});
//=> 'http://www.sindresorhus.com'
removeQueryParameters

Type: Array<RegExp | string> | boolean
Default: [/^utm_\w+/i]

Remove query parameters that matches any of the provided strings or regexes.

normalizeUrl('www.sindresorhus.com?foo=bar&ref=test_ref', {
	removeQueryParameters: ['ref']
});
//=> 'http://sindresorhus.com/?foo=bar'

If a boolean is provided, true will remove all the query parameters.

normalizeUrl('www.sindresorhus.com?foo=bar', {
	removeQueryParameters: true
});
//=> 'http://sindresorhus.com'

false will not remove any query parameter.

normalizeUrl('www.sindresorhus.com?foo=bar&utm_medium=test&ref=test_ref', {
	removeQueryParameters: false
});
//=> 'http://www.sindresorhus.com/?foo=bar&ref=test_ref&utm_medium=test'
keepQueryParameters

Type: Array<RegExp | string>
Default: undefined

Keeps only query parameters that matches any of the provided strings or regexes.

Note: It overrides the removeQueryParameters option.

normalizeUrl('https://sindresorhus.com?foo=bar&ref=unicorn', {
	keepQueryParameters: ['ref']
});
//=> 'https://sindresorhus.com/?ref=unicorn'
removeTrailingSlash

Type: boolean
Default: true

Remove trailing slash.

Note: Trailing slash is always removed if the URL doesn't have a pathname unless the removeSingleSlash option is set to false.

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'
removeSingleSlash

Type: boolean
Default: true

Remove a sole / pathname in the output. This option is independent of removeTrailingSlash.

normalizeUrl('https://sindresorhus.com/');
//=> 'https://sindresorhus.com'

normalizeUrl('https://sindresorhus.com/', {removeSingleSlash: false});
//=> 'https://sindresorhus.com/'
removeDirectoryIndex

Type: boolean | Array<RegExp | string>
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.

normalizeUrl('www.sindresorhus.com/foo/default.php', {
	removeDirectoryIndex: [/^default\.[a-z]+$/]
});
//=> 'http://sindresorhus.com/foo'
removeExplicitPort

Type: boolean
Default: false

Removes an explicit port number from the URL.

Port 443 is always removed from HTTPS URLs and 80 is always removed from HTTP URLs regardless of this option.

normalizeUrl('sindresorhus.com:123', {
	removeExplicitPort: true
});
//=> 'http://sindresorhus.com'
sortQueryParameters

Type: boolean
Default: true

Sorts the query parameters alphabetically by key.

normalizeUrl('www.sindresorhus.com?b=two&a=one&c=three', {
	sortQueryParameters: false
});
//=> 'http://sindresorhus.com/?b=two&a=one&c=three'
  • compare-urls - Compare URLs by first normalizing them

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Last updated on 04 Nov 2022

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