System requirements

To install JEM4 you minimally need:

- A working Joomla!4 / Joomla!5 installation
- PHP 8.0 or higher
- MySQL database

The JEM installer will check for minimal version requirements and will abort the install if they are not met. 

The following PHP settings are recommendend:

• max_execution_time >= 30
• memory_limit >= 32M (>= 64M recommended) - depends on other Joomla extensions used
• safe_mode >= off
• allow_url_fopen >= on
• upload_max_filesize >= 4M

For local development you can use a local webserver of your choice e.g. Apache or IS.