The Best Free Image Compressor
'Best' is not about the flashiest interface. It is about four things: does it hit the size you need, does it look good afterwards, does it respect your privacy, and does it stay free without limits.
Here is how OPTIMIZE IMAGE answers each of those, and how to judge any other tool you try.
Image Compressor
Runs on your device — no uploadDrop an image here
or click to browse, or paste from your clipboard with Ctrl/Cmd + V
JPG · PNG · WebP · AVIF · BMP · GIF — up to 40 MB
A checklist for judging any compressor
Run through these before trusting a tool with your files.
- Exact target size support, not just a vague quality slider
- Local processing with no upload — verify in the network inspector
- JPG, PNG and WebP output, plus modern input formats like AVIF
- A visual before/after comparison so you can judge quality yourself
- No watermark, no sign-up, no daily file cap
Where this tool stands
OPTIMIZE IMAGE uses iterative binary-search compression to land just under your target, falls back to graceful dimension scaling instead of failing, and runs entirely on your device. There is no account, no queue and no upload.