Settings

All settings are on one page: Media > MeloTools Optimizer.

How to optimise

A short reminder on the page: optimise images one at a time from Media > Library in list view, or from the MeloTools panel in an image's details. A line below it tells you that bulk and automatic optimisation are planned for MeloTools Premium.

Formats

Setting	Default	What it does
WebP	On	Creates a .webp copy next to each image and its thumbnails.
AVIF	Off	Creates an .avif copy. Smaller files, slower to produce. Only available if your server can write AVIF.

Converted copies are saved next to the original, for example photo.jpg.webp.

Quality

Setting	Default	Range
WebP	82	40 to 100
AVIF	60	20 to 100
JPEG	82	40 to 100 (used when recompressing originals)

Lower quality gives smaller files but can add visible artifacts. Photos usually tolerate more compression than logos, screenshots and text on images.

Behaviour

Setting	Default	What it does
Compress originals	Off	Also recompresses the original file. A backup of every file is kept in a private folder inside uploads and used by Restore. Recompression always starts from the backup, so quality never degrades over repeated runs.
Serve to visitors	Picture tags	Browsers that support AVIF or WebP get the lighter file, everyone else gets the original. "Off" keeps the files without serving them.

Safety

Setting	Default	What it does
Skip results that are not smaller	On	Keeps the original if a converted file would be larger.
Remove EXIF and GPS data	On	Strips metadata from generated files.
Delete files on uninstall	Off	When on, converted files and backups are deleted if you uninstall the plugin.

How to choose settings

Start with the defaults.
Change one setting at a time and check the result on a few images.
Turn on Compress originals only if you are comfortable with the backup and Restore flow.