Compress PNG
Make PNG files smaller without breaking transparency. The compressor reduces color depth intelligently and strips metadata. Your images still look pixel-perfect at a fraction of the size.
How to compress png
Three steps. No Photoshop skills needed.
Upload a PNG
Choose the PNG file you want to compress.
Compress
The tool optimizes the file while preserving transparency.
Download smaller PNG
Save the optimized file. Transparency stays intact.
What You Can Do with This Tool
PNG compression is fundamentally different from JPEG. Standard PNG compression is lossless, meaning no quality is lost at all. The file gets smaller by finding more efficient ways to store the same pixel data. However, the savings are modest compared to JPEG.
For significant PNG size reduction, color quantization is the key technique. A typical PNG uses 24-bit color, which supports 16.7 million colors. Most images only use a fraction of those colors. Reducing to 8-bit color (256 colors) can cut file size by 60-80% with surprisingly little visible difference on most photos.
PNG is the right format when you need transparency, sharp edges or exact color reproduction. Screenshots, logos, icons, line art and text-heavy images all do better as PNG than JPEG. If your PNG has no transparency and no sharp text, converting to JPEG might be a better path to smaller files.
This tool applies both lossless optimization and optional color reduction to shrink your PNG files. You keep the transparency and sharp edges that made you choose PNG in the first place.
Frequently Asked Questions
Why is my PNG file so huge? A simple screenshot is 8MB.
PNG is lossless, which means it saves every single pixel exactly. Screenshots with lots of colors, gradients and fine detail result in large files. A photo saved as PNG can easily be 5-10x larger than the same image as JPEG. If you don't need transparency or perfect pixel accuracy, converting to JPG will shrink it dramatically.
If I compress a PNG, will I lose the transparent background?
No. PNG compression is lossless. It rearranges the data more efficiently without changing a single pixel. Transparency stays completely intact. You'll get a smaller file that looks identical to the original.
Should I use PNG or JPG for my website images?
Photos: JPG (smaller files, good enough quality). Logos, icons, graphics with text, anything with transparency: PNG (sharp edges, exact colors, alpha channel). Screenshots: JPG is usually fine unless you need to show pixel-perfect text. For web performance, consider WebP which handles both photos and graphics well at smaller sizes.
What's the difference between PNG-8 and PNG-24?
PNG-8 uses a palette of 256 colors maximum. Great for simple graphics and icons, very small files. PNG-24 supports millions of colors. Needed for photos and detailed graphics, much larger files. If your image has few colors (like a logo or flat illustration), PNG-8 can be 5-10x smaller than PNG-24.
I have a PNG with transparency that's 15MB. How do I make it smaller without losing the alpha channel?
Our compressor will reduce the file size while preserving full transparency. If it's still too large, consider whether the image really needs to be PNG. If there's no transparency, converting to JPG will give you a much smaller file. If you do need transparency, try reducing the color palette or resizing the dimensions down.