Compress Image
Reduce image file size without visible quality loss
What is image compression?
Compress Image reduces your image file size with minimal visible quality loss. Smaller images load faster on websites, use less storage, and are easier to email or share. This tool uses smart compression algorithms tuned for each format.
All compression runs locally in your browser — your images are never uploaded to a server. You can adjust the quality slider to balance file size against visual fidelity, and compare before and after to pick the right setting.
How to use Compress Image
Upload your image
Click the upload area or drag and drop one or more image files.
Adjust the quality setting
Move the quality slider — lower values give smaller files, higher values preserve more detail.
Click Compress
The image is compressed in your browser. A file size comparison is shown so you can see the reduction.
Download the compressed image
Click Download to save. For multiple images, download each individually or as a zip.
Frequently asked questions
How much smaller will my image be after compression?
Results depend on the image content and quality setting. Photographs typically compress by 40-70% at quality 80 with little visible difference. Screenshots and graphics with flat colors compress very efficiently.
Does compression reduce image dimensions?
No. Compression only reduces file size by encoding image data more efficiently. The pixel dimensions (width and height) remain exactly the same.
Is the compression lossy or lossless?
For JPG and WebP, compression is lossy — very small visual details are discarded to achieve smaller sizes. For PNG, lossless compression is used, preserving every pixel. You can compare the original and compressed output in the tool before downloading.
Are my images uploaded to your server?
No. All image compression happens in your browser. Your images never leave your device.