Best for
- •Website images that need smaller file sizes
- •UI assets and screenshots before publishing
- •PNG files that should stay in PNG format
PNG optimizer
Compress PNG Online in Your Browser
Reduce PNG file size with browser-based re-encoding. When optimization does not reduce size, the original file is kept.
Compress PNG
PNG images up to 10MB
Options
Browser optimization re-encodes the PNG and keeps the smaller file only when it reduces size.
Original Image
Original previewChoose an image and it will appear here.
Result Image
Waiting for resultProcess an image to preview the result here.
Preview background
How to use this tool well
Steps
- 1Upload a PNG image.
- 2Run optimization in the browser.
- 3Download the optimized file when it is smaller than the original.
Tips
- •Already optimized PNGs may not shrink further.
- •Resize very large images before compressing them for stronger savings.
- •Use JPG conversion when transparency is not needed and a photo can have a flat background.
What compression changes
The tool re-encodes the image and compares file sizes. It only offers the new file when the result is smaller, so you do not accidentally download a larger PNG.
Transparency support
PNG transparency is preserved. If the image does not need transparency, converting to JPG may reduce size more.
Related guides
Tool FAQ
What images work best with this tool?
Images with simple background colors, clean edges, and enough source resolution are easier to inspect and clean.
What should I do if the result is not clean?
Switch preview backgrounds, inspect the edge, adjust strength or tolerance gradually, and compare with the related guide recommendations.
Are my images stored on a server?
ClearPNG is designed around browser-based workflows without accounts or image storage features.