Compress
Compress images
6 toolsMake photos smaller without visible quality loss. Pick a quality level or type the exact size you need, and everything happens on your device.
Compress image
Shrink JPG, PNG, WebP and AVIF by quality or target size
Compress JPG
Shrink JPGs with a live before/after preview
Compress PNG
Cut PNG size by reducing colours, keeping transparency
Compress WebP
Re-encode WebP images at a smaller size
Compress to exact KB
Hit an exact size limit like 20 KB, 50 KB or 200 KB
Image size checker
See dimensions, file size, format and colour info
Guides
How to compress an image to an exact size in KB
Forms often ask for a photo under 100 KB or 200 KB. Learn how quality and dimensions trade off, with measured sizes, and how to hit a target size.
4 min readCompress
HEIC vs JPG: what's the difference and which should you use?
HEIC files are smaller than JPGs at the same quality, but plenty of software still can't open them. Here's how the two compare and when to convert.
2 min readBasics
JPG vs PNG vs WebP vs AVIF: which one to use
A practical guide to the four common image formats, with file sizes measured on the same test image, and a simple rule for choosing between them.
4 min readBasics
How to reduce image size without losing quality
Measured file sizes at quality 90, 75 and 60, and JPG against WebP and AVIF at settings that look the same, so you can shrink images without visible damage.
3 min readCompress
Why image tools should run in your browser
Most online image tools upload your photo to a server. Here is what that costs you in privacy and time, and how browser-only tools avoid it.
4 min readBasics