Shrink heavy PNGs with real colour quantization — big savings that keep crisp edges and full transparency. Free, no sign-up, no email — drop your files and grab smaller PNGs in seconds.
Compress PNGs with real lossy colour quantization for strong savings that still keep transparency.
Fire up the PNG compressor in any browser on Windows, Mac, iPhone or Android. There is nothing to install or sign up for.
Drop in or pick one PNG or a whole stack of them straight into the drop zone, from your desktop, downloads folder or camera roll.
Each PNG is quantized to a compact colour palette and shrunk — transparency intact. Save them one by one or grab the whole batch as a ZIP.
Plain re-saving barely shrinks a PNG. We use true lossy colour quantization (down to a smart 256-colour palette), which cuts PNG file size dramatically while keeping edges crisp and transparency intact.
Your alpha channel is kept, so logos, icons and cut-outs stay transparent — they just weigh a lot less. No white box gets added behind them.
Compression runs entirely inside your browser on your own device. Your files are never sent to a server, so it is safe even for private graphics and screenshots.
No upload, ever. The compression runs entirely inside your browser using your own device — your files are never sent to any server and nothing is stored or shared. That makes it safe for sensitive graphics and screenshots, because the files never leave your device.
Re-saving a PNG barely shrinks it, so we use UPNG.js to apply real lossy colour quantization — reducing the image to a compact palette (around 256 colours) right in your browser. That cuts the file size dramatically while keeping sharp edges and the transparency of your original.
Yes. The alpha channel is preserved, so transparent logos, icons and cut-outs stay transparent after compression — they just weigh far less. Nothing is flattened onto a white background.
Quantizing to a smaller palette is technically lossy, but for most graphics, screenshots and logos the result looks the same to the eye at a fraction of the size. If a PNG can't be shrunk, we keep your original bytes so you never download a bigger file.
Open this page, drop your .png files into the box, and download the smaller versions. There is no account, no email, no watermark and nothing to install — it is free and unlimited.
Yes. Drop a whole batch and each one is compressed right in your browser, then bundled into a single ZIP you can download in one click, with each file up to 60 MB.
Yes. Open the page in any mobile browser on iPhone or Android, choose your PNG images, and the compressed files download straight to your phone — no app required.
Never. Your compressed PNGs come out completely clean with nothing stamped on them — no logo, no badge, no paywall and no credit card.
Real colour quantization cuts PNG file size dramatically — transparency kept, free, instant, no watermark.
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