Compress PNG Images Online

Why compress PNG files?

PNG is a lossless format, which means it preserves every pixel and supports full alpha transparency—ideal for logos, UI assets, screenshots, and graphics with sharp edges. Because PNG does not throw away detail the way JPEG does, files can grow large quickly, especially for photos or high-resolution art.

Good PNG compression re-encodes the image more efficiently while keeping the same visual result, so you keep transparency and crisp lines without noticeable quality loss. For photographs or complex gradients, JPEG or WebP often yields much smaller files; PNG shines when you need transparency or pixel-perfect graphics.

To reduce PNG size further, consider removing unused transparent margins, using fewer colors where possible, or resizing oversized images before export. Our tool runs entirely in your browser, so you can experiment with quality and dimensions without uploading your files to a server.