Image & Photo Tools
Image Compressor
Shrink JPEG, PNG and WebP files with a live quality preview and a before/after size comparison.
Privacy
Your images never leave your device. Files are decoded and redrawn by your own browser using the Canvas API, so nothing is uploaded, queued or logged.
Tips
- WebP is typically 25–35% smaller than JPEG at the same visual quality, and every current browser supports it.
- Quality 80 is the usual sweet spot for photographs. Above 90 the file grows quickly for a difference almost nobody can see.
- The largest saving is usually resizing, not compressing. A 4000px photo shown in an 800px column wastes most of what the visitor downloads.
- Compressing an already-compressed JPEG loses more quality each time. Always start from the original.
Frequently asked questions
Are my images uploaded?
No. The file is read by your browser, drawn to a canvas and re-encoded locally. Nothing is transmitted, which is why this works with the network off.
Why did my PNG get bigger as a JPEG?
JPEG handles photographs well and flat colour badly. Screenshots, logos and diagrams belong in PNG or WebP; converting them to JPEG usually adds size and visible artefacts.