About this tool
Make images smaller without making them look worse. Choose a size limit such as 200 KB or 2 MB and the tool finds the best quality that fits, or set a fixed quality yourself. You can process many images at once and download them in one ZIP.
Formats: JPEG and WebP for everyday use, AVIF for the smallest files, and lossless PNG optimisation. Everything runs in your browser, so large batches stay fast and your images stay private.
How to use it
- Add your images (many at once is fine).
- Check the size limit, or type your own.
- Pick a format. Auto keeps the smaller of WebP and JPEG.
- Use View to compare with the original, then Save or Download all (ZIP).
Questions
How does target size mode work?
You give a maximum size. The tool tries different quality levels and keeps the highest one that stays under your limit. If needed it also scales the image down slightly.
Which format gives the smallest file?
AVIF is usually the smallest, then WebP, then JPEG. PNG is lossless, so it is best for graphics and screenshots rather than photos.
Are my images uploaded anywhere?
No. Everything runs in your browser, so your images stay on your device and are never sent to a server.
Is it really free?
Yes. There is no sign-up, no watermark and nothing to install.