Make an image file smaller without uploading it. Choose JPG or WebP, lower the quality slider and compare the new size with the original. It runs in your browser.
How it works
Choose an image and the tool loads it in your browser, draws it onto a canvas at the size you choose, and saves the result in the format you pick. Nothing is uploaded to a server. With “Keep proportions” on, changing the width sets the height automatically so the picture is not stretched. JPG and WebP use the quality slider: lower quality means a smaller file.
JPG does not support transparency, so transparent areas become white when you save as JPG. PNG keeps transparency but files are usually larger.
Tips
- A quality of 0.7 to 0.8 usually looks close to the original for photos and is much smaller.
- WebP files are often smaller than JPG at the same quality, and are widely supported.
- Screenshots and logos with flat colours compress better as PNG or WebP.
- Resize the dimensions too, if the image is larger than it needs to be.
Frequently asked questions
How does it compress?
It re-saves the image at a lower quality setting, which discards detail the eye barely notices.
Will quality drop?
Slightly. Lower quality gives smaller files but more visible artefacts, so check the preview.
Is my image uploaded?
No. It stays in your browser.
More free tools: Image resizer · PNG to JPG converter · All free tools
Your image never leaves your device. Everything happens in your browser.