Local Browser ProcessingZero Server Uploads
PNG Compress Image
Shrink PNG files by optimizing the palette and bit depth — effectively lossless for screenshots, logos and UI graphics. For big savings on photos, WebP or AVIF output is available.
Select images to compress
How to use
Four steps for PNG files — the whole flow runs in your browser.
- Upload your imageAdd the images you want to shrink.
- Choose compression settingsPick a quality level, or a target size like 200 KB.
- CompressPress Compress — processing happens on your device.
- DownloadCheck the achieved size, then download.
- Every step runs locally in your browser.
Key Features
PNG processing runs entirely in your browser — nothing is uploaded.
- Quality controlsA quality slider with a live size estimate for the active image.
- Target file sizeHit limits like 100 KB — the tool finds the best quality that fits.
- Multiple image supportCompress a batch and download everything as a ZIP.
- Format optionsKeep the original format or choose JPEG, PNG or WebP.
Frequently asked questions
Yes — PNG output optimizes how colors are stored without altering them. Photos often compress far better in a lossy format, so WebP/AVIF targets are offered.
PNG stores photos uncompressed per-pixel; they are the worst case for it. Convert the photo to JPEG/WebP/AVIF for a fraction of the size.