Contao is an Open Source PHP Content Management System for people who want a professional website that is easy to maintain. Visit the project website for more information.

• Web server
• PHP 7.2+ with GDlib, DOM and Phar
• MySQL 5.5.7+
• InnoDB with innodb_large_prefix enabled

MySQL versions prior to 5.7.7 do not have the innodb_large_prefix option enabled by default. To enable it in one of these versions, add the following to your my.cnf file:

innodb_large_prefix = 1
innodb_file_format = Barracuda
innodb_file_per_table = 1

If the option cannot be enabled on your server, please configure a different database engine and character set in your config/config.yml file:

doctrine:
    dbal:
        connections:
            default:
                default_table_options:
                    charset: utf8
                    collate: utf8_unicode_ci
                    engine: MyISAM

See the system settings chapter of the user's manual for further information.

Chrome, Firefox, Safari 12+, IE 11, Edge 17+, Opera, Chrome for Android, Safari for iOS 11.3+, Samsung Internet 8.2+

See the [installation chapter][3] of the user's manual.

• User Manual
• Developer Documentation

Contao is licensed under the terms of the LGPLv3.

Visit the support page to learn about the available support options.