JPG Compressor
Reduce JPEG file sizes by adjusting compression quality. Preview compression results side-by-side and download the optimized image.
JPEG quality 75–85% gives the best balance between file size and visual quality for web images. At 80% quality, file size is typically 60–70% smaller than the original with no perceptible quality loss.
Drag & drop or click to upload
Supports image/jpeg, image/jpg — processing happens in your browser
Frequently Asked Questions
What quality level should I use?
For web images, 75-85% quality provides an excellent balance. For photography prints, use 90%+.
Is my image uploaded to a server?
No. All compression happens in your browser using the Canvas API. Your images never leave your device.
How much smaller will the file be?
Results vary by image content. Highly detailed photos typically compress 40–70% at 80% quality. Images already compressed at high quality may see smaller gains.
Does JPEG compression accumulate if I compress multiple times?
Yes. Re-compressing a JPEG introduces additional artefacts each time. Compress once from the original source file rather than re-compressing an already-compressed image.