You can check the quality of optimization on service page before bulk optimization.Click 'Re-generate all product image thumbnails', check 'Automatically create thumbnails of predefined custom sizes'. Specify 'Thumbnails to be created when image is uploaded' (contact theme developer to get more information).ģ. If you want to reduce unnecessary compressions, re-generate all product image thumbnails.Ģ. If you have the opportunity, be sure to make backup before that!.Each API-key let you make 500 compressions for free. API-key is assigned to your email-address.Original image is overwritten only if optimized image has smaller size.Protecting images from re-optimizing (double optimization).Custom optimization: you can select products or images.The file size is reduced by more than 70%.Compression with a perfect balance in quality and file size.To read more about plans and pricing and get API key you can on service page. You will only be billed if you compress more than 500 images. The first 500 compressions each month are free! To optimize JPG and PNG plugin uses partially free service TinyPNG.

Tinypng plugin