Enable System - J2XML plugin
Select Extensions > Plugin Manager from the drop-down menu on the Back-end of your Joomla! installation.
Type "j2xml" into filter field and click to go.
Check the box to select the System - J2XML plugin and click the Enable button.
Select export options
Select Components > J2XML from the drop-down menu on the back-end of your Joomla! installation.
Click on Parameters button to open the Global Configuration Window.
Set the default parameters for export function.
- Images. Select whether to export images (images will be exported in base64 encode).
- Users. Select whether to export users that relate articles.
- Compress. Select whether the export file will be compressed.
Click the Article Manager icon in the Control Panel, or click 'Article Manager' in the 'Content' menu in the Back-end of your Joomla! installation.
Check the boxes to select the articles you want export to.
Click the export button.
You can also export contents from Section Manager and Category Manager.