Compress PNG images.
Make your PNGs smaller without touching a single pixel. This free PNG compressor runs OxiPNG right in your browser for lossless savings, and it can convert to WebP or AVIF when you want to go much further. Nothing gets uploaded.
Compression settingsApplied to every image
Format
Auto keeps each image in its original format, re-compressed smaller.
Compression
Quality
Lower quality makes smaller files. Around 78% keeps photos crisp.
Metadata (EXIF, GPS & camera data) is always removed. Files are processed on your device.
No images yet.
| Image | File | Original | Compressed | Action |
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Why use this
Fast, private, and free.
- Lossless OxiPNG compression keeps every pixel exactly as it was.
- Convert to WebP or AVIF to cut size by 50 to 90 percent when you don't need PNG.
- Resize and batch process hundreds of files in one go.
- Completely private. Your PNGs never leave your browser.
FAQ
Good to know.
Does compressing a PNG reduce quality?
No. OxiPNG compression is lossless, which means the pixels stay identical and the file is just packed more efficiently. If you want it smaller still, convert the image to WebP or AVIF.
Why is my PNG still large after compressing?
PNG keeps every pixel, so photos stay heavy no matter what. If the image is a photo rather than a logo or a screenshot, switch the output to WebP or AVIF for a much smaller file.
Are transparent PNGs supported?
Yes. Transparency is kept for PNG output, and both WebP and AVIF hold on to the alpha channel too.