Optimize PNG images without losing transparency or sharpness. Drop your files below and reduce PNG file size by up to 80% – free, private and no signup required.
Drag & drop your images here
or click to browse · PNG · Up to 25 MB each · Max 10 files
Reduce PNG file size online in under a minute.
Drag & drop up to 10 PNG files, or click to browse. Logos, icons, screenshots and graphics all work.
Keep original dimensions or resize, and enable smart compression for graphics. Transparent areas are always preserved.
Click “Compress Now” and get your lighter PNG instantly, with the exact savings shown for each file.
PNG is the go-to format for anything that needs sharp edges, crisp text or a transparent background: logos, icons, UI screenshots, diagrams and flat illustrations. The trade-off is file size – because PNG stores every pixel losslessly, files from design tools and screen captures are often far bigger than they need to be for the web.
That is exactly the problem this PNG optimizer solves. Common situations where optimizing PNG pays off immediately:
The optimizer re-encodes your file with maximum lossless compression, which strips bloated metadata and rebuilds the data stream more efficiently – your image stays pixel-perfect. When smart compression is enabled, the image is converted to an optimized 256-color palette: for screenshots and graphics this shrinks PNG file size by 50–80% while keeping fully transparent pixels intact. Because every pixel of a photograph matters, detailed photos are better handled by our JPEG compressor, which can squeeze them much smaller.
If you need your image under an exact limit for a form or portal, use the image size reducer in KB instead – it targets a specific KB value automatically. And for animations, the GIF size reducer is the right tool.
Upload your PNG using the tool above, optionally enable smart compression, and click "Compress Now". Your optimized PNG downloads instantly. The optimizer is completely free with no signup and no watermark.
No. Transparency is fully preserved in standard optimization mode, which is what makes this PNG optimizer safe for logos and icons. In smart 256-color mode fully transparent pixels are also kept; only semi-transparent shades are approximated, which most images never notice.
Smart mode converts the image to an optimized 256-color palette. Screenshots, logos, icons and flat graphics shrink by 50-80% with virtually no visible change. For detailed photographs we recommend leaving it off and using the JPG format instead.
PNG uses lossless compression so every pixel is stored perfectly - that is why it is great for text, line art and transparency but heavy for photographs. A photo saved as PNG can be 5-10x larger than the same photo as JPG.
Yes, always free with no file limits, no watermark and no account. Files are automatically deleted from the server within an hour of processing.
Compress other formats with dedicated tools: