TOOLMake images smaller, privately
Big image files slow down websites and fill up storage. This compressor re-encodes your image at a quality you choose, cutting the file size — often by 70% or more — while keeping it looking good. It all happens in your browser using the Canvas engine, so your image is never uploaded.
How to use it
- Choose an image — click the box or drop a file.
- Drag the quality slider — watch the compressed size update live.
- Download — save the smaller file when you're happy with the size.
Picking a quality
70–80% is the sweet spot for web images: a big drop in size with little visible difference. Go higher for photos you want pristine, lower when size matters most. Want to change the dimensions instead? Use the image resizer. Need a different format? Try the image converter.
Compression is applied by re-encoding to JPEG. All processing is local — no image is uploaded, logged or stored.
Frequently asked questions
Is my image uploaded to compress it?
No. Compression happens entirely in your browser with the Canvas API. Your image is never sent to a server — it stays on your device and nothing is stored.
How does image compression work?
The image is re-encoded at a lower quality setting, which discards fine detail your eye barely notices to produce a much smaller file. Lower the quality slider for a smaller size, raise it for higher fidelity.
What is a good quality setting?
Around 70 to 80 percent quality usually cuts file size dramatically with little visible loss, which is ideal for web images. Use higher for photos you want to keep crisp.