Here you will find our help articles for JG 3.
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FAQ
First steps: Installation, Upload, Configuration
What can you do to narrow down a problem? - The checklist
Explanation of the views "Gallery", "Category", "Detail"...
Search engine friendly URLs for images
Changing the output - Template overrides
Changing the specified text output - Language overrides
Detail- and original images are not displayed, why?
Extensions
Inserting images in the content of Joomla! with the plugins JoomPlu and JoomBu
Search for JoomGallery content with the JoomSearchPlugin plugin and the JoomSearchModule
Additional fields for images and categories
Tutorial
Remove the word 'Description' in the Category view