Compress PNG Images

Free Online PNG Compressor

PNG images are great for logos, screenshots, and graphics with transparent backgrounds, but they can also take up a lot of space. LovePDFImg's Compress PNG tool helps you reduce that file size while keeping your transparent areas exactly as they are. Because PNG is a lossless format, the most reliable way to cut file size significantly is to adjust the image's scale — and that's exactly what this tool lets you control with a simple slider.

Everything runs through your browser's Canvas API: each image is drawn at the chosen scale and re-exported as a PNG, preserving the alpha channel for transparency. Upload one image or a whole batch, preview the size difference for each file, and download everything together as a ZIP. No files are uploaded to a server at any point.

How to Compress a PNG

1. 1Upload your imagesDrag and drop one or more PNG files, or click to browse.
2. 2Choose a scaleLower the scale percentage to reduce dimensions and file size; 100% keeps the original size.
3. 3Click "Compress Images"The tool re-encodes each PNG and shows the new file size next to the original.
4. 4Download your filesGet all compressed PNGs together in a single ZIP download.

Frequently Asked Questions