PNG is lossless, so the biggest savings come from smarter encoding. This tool can re-encode to WebP with transparency intact, which is usually 50 to 80 percent smaller, or keep PNG and reduce dimensions.
Free, no sign-up
Files never leave your device
Batch processing
No watermark
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Your files are processed on this device and are never uploaded to a server.
How to use the Compress PNG
1
Drop your PNG files.
2
Keep the WebP output for the smallest size, or choose PNG to stay in the same format.
3
Compress and download.
Why PNG compression is different
PNG has no quality setting: every pixel is stored exactly. Re-saving a PNG as PNG rarely saves much. Switching to WebP keeps the alpha channel and supports both lossless and lossy modes, and every modern browser displays it. Choose PNG output only when the destination requires PNG.
Frequently asked questions
Are my images uploaded to a server?
No. Images are decoded and processed by your browser on your own device. Nothing is uploaded, which also makes the tool fast for large batches.