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---
layout: default
title: Autolink Extension
description: The Autolink extension automatically converts URLs in plain text to clickable links
---
# Autolink Extension
_(Note: this extension is included by default within [the GFM extension](/2.1/extensions/github-flavored-markdown/))_
The `AutolinkExtension` adds [GFM-style autolinking][link-gfm-spec-autolinking]. It automatically links URLs and email addresses even when the CommonMark `<...>` autolink syntax is not used.
## Installation
This extension is bundled with `league/commonmark`. This library can be installed via Composer:
```bash
composer require league/commonmark
```
See the [installation](/2.1/installation/) section for more details.
## Usage
Configure your `Environment` as usual and simply add the `AutolinkExtension` provided by this package:
```php
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\Autolink\AutolinkExtension;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
use League\CommonMark\MarkdownConverter;
// Define your configuration, if needed
$config = [];
// Configure the Environment with all the CommonMark parsers/renderers
$environment = new Environment($config);
$environment->addExtension(new CommonMarkCoreExtension());
// Add this extension
$environment->addExtension(new AutolinkExtension());
// Instantiate the converter engine and start converting some Markdown!
$converter = new MarkdownConverter($environment);
echo $converter->convertToHtml('I successfully installed the https://github.com/thephpleague/commonmark project with the Autolink extension!');
```
## `@mention`-style Autolinking
As of v1.5, [mention autolinking is now handled by a Mention Parser outside of this extension](/2.1/extensions/mentions/).
[link-gfm-spec-autolinking]: https://github.github.com/gfm/#autolinks-extension-
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