Image Compressor
Compress images in the browser by adjusting output quality and format.
Select an image to start.
Original
Compressed
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Overview
Compress images in your browser by adjusting quality, with no upload to any server. Useful for shrinking photos before posting, emailing, or publishing to the web.
How to use
- Select or drop an image file.
- Adjust the quality slider and check the estimated output size.
- Download the compressed image.
Examples
-
Blog photo
Input: A 4 MB JPEG photo
Output: A few hundred KB at 80% quality with little visible difference.
-
Web banner
Input: A PNG screenshot
Output: A smaller WebP version for faster page loads.
Notes
- Processing uses the Canvas API locally; images never leave your device.
- PNG is lossless, so converting a PNG to WebP or JPEG often saves much more space.
- WebP is typically 25-35% smaller than JPEG at similar visual quality.
FAQ
- What quality setting should I use?
- 80-85% is a good starting point for web use: noticeably smaller files with minimal visible loss.
- Why didn't my PNG get much smaller?
- PNG compression is lossless. Switch the output format to WebP or JPEG for bigger reductions.
- Are my images uploaded?
- No. Compression runs entirely in your browser via the Canvas API.
Embed this tool
Paste this iframe into any HTML page to embed Image Compressor on your site: