How does ShortPixel Image Optimizer work?
Our lightweight plugin sends the original images to our Image Optimization Cloud where they are compressed and optimized. Here's step by step how ShortPixel Image Optimizer (SPIO) works:
- An image is uploaded to the site.
- SPIO detects the new image (and its thumbnails) and sends it to ShortPixel's optimization servers.
- The image is optimized and sent back to the site.
- SPIO replaces the physical unoptimized image (and its thumbnails) with the optimized one from the optimization servers. Optionally, a backup is created.
ShortPixel Image Optimizer only replaces your physical image files. It does not edit how your webpage looks and it does not modify the code of your webpage (unless you are delivering WebP files).
This process is done for every image (and respective thumbnails if you selected so) you optimize on your site, whether you do it from Media > Bulk ShortPixel, from your Media Library one by one, or for new uploads.