This is the documentation for the unsupported version 2.2. Please consider upgrading your code to the latest stable version

Autolink Extension

(Note: this extension is included by default within the GFM extension)

The AutolinkExtension adds GFM-style autolinking. It automatically links URLs and email addresses even when the CommonMark <...> autolink syntax is not used.


This extension is bundled with league/commonmark. This library can be installed via Composer:

composer require league/commonmark

See the installation section for more details.


Configure your Environment as usual and simply add the AutolinkExtension provided by this package:

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->convert('I successfully installed the 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.

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