Add-on have provide a powerful settings in ACP options. You MUST settings option before running optimize images.
All files will be overwrite then you cannot revert the file to original.
Optimizing all images which stored in XenForo to lower size and do not loss quality.
NOTE: THIS ADDON CURRENTLY DOESN'T WORK WITH XENFORO PROXY FEATURE.
Imagine a thread with 100 image attachments, when a user loads the page, these images generate 100x6 = 600 queries in my DB servers (in full-size image mode). This's crazy!
This addon reduces the usual 6 queries per image to 1...