Compress to a target size

This page opens in Target kB mode with 100 already set. Drop your image and the tool binary-searches the encoder quality until the result fits under 100 KB, then shows you the final size. Change the number to 50, 200 or any budget you need.

The tool encodes at the lowest sensible quality and tells you the truth - for example "couldn't hit 50 kB - got 78 kB" - rather than faking success or destroying the image. To get under a stubborn target, switch to a smaller format like WebP or AVIF, or reduce the resolution with the resize option.

No, and that is deliberate. Target mode aims only at the file size; it never decides whether the image looks acceptable. You stay in control by watching the before/after preview and can nudge the quality yourself afterwards if you want.

No. Decoding, resizing, compression and ZIP packaging all run inside your browser using WebAssembly codecs. Your images never leave your device and nothing is sent to a server, so it works offline and is safe for private photos.

Yes. Drop multiple files, a folder or a ZIP. Each image keeps its own settings (a new one inherits whatever you last used); to apply the current settings to several at once, select them and use "Apply current settings". Download them individually or as one ZIP.