Skip to content
Switch branches/tags

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

Asciidoctor Browser Extension

This project uses Asciidoctor.js to preview AsciiDoc as HTML inside Chrome (or Chromium), Firefox and Opera!

chromewebstore badge wborder 496x150 AMO button 1 addons 206x58 en@2x edgewebstore badge

Project health: Build Status Build Status


Chrome, Chromium, Brave or Opera

  1. Install the extension from the Chrome Web Store or the Opera Add-ons website

  2. Check Allow access to file URLs in chrome://extensions

  3. Open local or remote .ad, .adoc, .asc, .asciidoc files in your browser

  4. Enjoy!


  1. Install the extension from the Firefox Add-ons website

  2. Open local or remote .ad, .adoc, .asc, .asciidoc files in Firefox

  3. Enjoy!


On Firefox, pages viewed directly from GitHub may not render properly. This is result of a Firefox bug carrying over the Content Security Policies (CSP). The restrictive CSP sent by GitHub are applied to the content inserted by the WebExtension.

In addition, the extension does not automatically trigger in Firefox when navigating to a file:// from a link. Instead, you have to enter the file:// URL directly into the address bar of the browser. If you do navigate to a file:// URL from a link, simply highlight the address bar and press "Enter" to force the extension to load. There’s an open issue in the Firefox bug tracker to fix this limitation.


Loading your local copy of the extension on Chrome (or Chromium), Firefox or Opera is super easy!

Chrome, Chromium, Brave or Opera

  1. Check Developer mode in chrome://extensions

  2. Click Load unpacked extension…​ and select the extension app directory

  3. That’s all

To see your changes, click the Reload (Ctrl+R) link in chrome://extensions. If you want to create a Pack extension just make a zip file of the extension app directory.


  1. Click on the Load Temporary Add-on in about:debugging

  2. Select the manifest file in the app directory

  3. That’s all

To see your changes, click the Reload link in about:debugging.


The extension can be configured via an options page.

To open the options page, in Chrome, Brave or Opera, right-click the extension icon and choose Options on the menu. You can also go to chrome://extensions and click the Options link.

In Firefox, go to about:addons and click the More link or the Preferences button.

The options page let you add custom Asciidoctor attributes or change the theme of the AsciiDoc HTML output.


See the hacking file.


See the changelog file.

Copyright © 2013-2020 Guillaume Grossetie. Free use of this software is granted under the terms of the MIT License.

See the LICENSE file for details.