Why are my images automatically compressed?
There are a few cases when the images are automatically compressed:
- Optimize on upload option is checked by default in the /wp-admin and then Settings/ShortPixel. If you don't change this option, then the images will be compressed automatically after they are uploaded to the Media Library.
- Some plugins (like regeneration thumbnails or thumbnail editors plugins) can change WP Metadata and trigger the optimization.
- Bulk processor was already started and a list of images was sent to be processed.