The ultimate PNG compression tool. Reduce image size while preserving perfect transparency and sharp edges. Compress PNG without transparency loss instantly. Our intelligent quantization algorithm preserves the alpha channel while reducing the color palette imperceptibly, ideal for logos, icons, and images with transparency.
Drag and drop or select the PNG images or logos to process.
Optimize the weight while preserving perfect transparency.
Get your optimized PNG images ready to use instantly.
PNG compression typically uses the DEFLATE algorithm, which is lossless. However, to achieve significant weight reduction, our tool uses a technique called palette quantization. This process reduces the number of colors in the image from millions to a few hundred carefully selected ones that representing the original image's look almost perfectly.
When you reduce PNG image size with OptimizeImg, we also optimize the file's internal structure and remove unnecessary metadata chunks. This is particularly effective for screenshots, logos, and UI elements, where we can achieve massive size savings (often over 70%) without losing the crisp edges or transparency that define the PNG format.
In addition to compressing images, you can also convert between formats directly in your browser.
Change between JPG, PNG, WebP and AVIF without losing quality. 100% private.