How to use the Compress Image
- Choose or drop one or more images.
- Set the quality (60–80% is a good balance) and an optional maximum width.
- Download the compressed images.
Most of an image's size comes from its pixel dimensions and how much detail the format keeps. Lowering the resolution to what you actually need and saving at 70–80% quality usually cuts file size by 60–90% with no visible difference on screen.
Frequently asked questions
Are my files uploaded?
No. The conversion runs entirely in your browser using JavaScript, so your files never leave your computer or phone.
What quality should I use?
For photos, 70–80% is nearly indistinguishable from the original. Go lower for thumbnails.
Is WebP better than JPG?
WebP is typically 25–35% smaller at the same quality and is supported by all modern browsers.