Compress PNG Online Free
Reduce PNG file size instantly — free, no upload, runs in your browser. Also compresses JPG and WebP. Your files never leave your device.
Drop images here to compress
JPEG · PNG · WebP · GIF · multiple files OK
How to compress a PNG image
Drop your PNG above and use the quality slider to control the trade-off between file size and sharpness. The before/after sizes are shown in real time. At 80% quality, most PNGs shrink by 50–70% with no visible difference. Nothing is uploaded — compression runs in your browser.
Frequently asked questions
How much can I compress a PNG?
PNG files with many colors (like photographs) can typically be compressed 50–70% without visible quality loss using 80% quality. Screenshots and graphics with large flat-color areas compress even more. The tool shows exact before/after sizes so you can see the reduction.
Does compressing a PNG reduce quality?
At 80–90% quality the difference is invisible to most people. Below 60% you may see color banding in gradients and blurring around sharp edges. The quality slider lets you find the right point for your specific image.
What is the difference between compressing PNG and converting to JPG?
PNG compression here converts the image to JPEG format internally for maximum file size reduction. If you need to keep the output as a PNG (for transparency support), use our PNG maker which keeps lossless PNG encoding. For pure size reduction, JPEG compression achieves the smallest files.
How do I reduce PNG file size without losing transparency?
Standard JPEG compression removes transparency (alpha channel). If your PNG has a transparent background and you need to keep it, use an online PNG optimizer like TinyPNG that preserves transparency. This tool is optimized for maximum compression using JPEG output.
What is the best way to reduce PNG file size for a website?
Compress to 80% quality first, then resize to your actual display dimensions using the image resizer. Serving a 2000px PNG for a 400px slot wastes 25× more bandwidth than needed. Combine both steps for the smallest possible file.
How do I compress multiple PNG files at once?
Drop multiple PNG files onto the tool at once — all will be compressed and available to download individually.
Is there a PNG file size limit?
No limit — compression runs entirely in your browser. For very large files (50MB+) allow a few seconds for processing.