01 / GUIDE
How to use Optimize images for web
- Choose source images and set a maximum pixel width.
- Select WebP, JPEG, or PNG and check the quality option.
- Run the optimizer and inspect the measured size change.
02 / DETAILS
About this conversion
Set a maximum width and target format, then compare actual before-and-after bytes. The optimization is a real resize or re-encode, not a format label.
Images are decoded, resized only when they exceed the chosen width, and encoded in the target format. The original is kept; smaller output is not guaranteed for every source.
Limits to know
Each input is limited to 40 MiB and 16 megapixels so the browser has a safer memory budget. Very large dimensions can still exceed the memory available on a phone.
Processing runs in this browser. Originals are not overwritten, and the output size is measured in bytes before download. Keep a backup of important files.
03 / FAQ
Questions people ask
Does web optimization always reduce bytes?
No. Already optimized images or small files may not shrink. The exact output is compared before download.
Will the original image be removed?
No. Optimization creates a separate result and does not modify the selected source.
04 / EXPLORE