5 min read
2026-02-05
JPEG for photos, PNG for graphics with transparency, WebP for universal use on websites.
There's no point in compressing a 4000x3000 photo for a 300x200 thumbnail. Resize first, then shrink.
Progressive JPEG loads gradually, improving the perceived page loading speed.
Metadata (camera, GPS, date) can take up to 20% of the file size and is not needed for the web.
Banners: 80-85%
Product cards: 75-80%
Background images: 60-70%
Check how a compressed image looks on high-pixel-density mobile screens.
For large projects, set up automatic compression when uploading images to the server.
See also: Resizing, Favicon Generator