Yes, PNG Minify is completely free. There are no hidden fees, subscriptions, or limits on the number of files you can compress.

Does my image get uploaded to a server?

No. All compression happens entirely in your browser using JavaScript. Your images never leave your device and are never sent to any server.

What is the maximum file size?

Each PNG file can be up to 50 MB. You can compress up to 20 files at once.

Results vary depending on the PNG content, but typical savings range from 30% to 80%. Photographic PNGs compress more than simple graphics or icons.

PNG Minify focuses on PNG only. For WEBP files we recommend using miniwebp.com.

Yes. You can use the compressed images in any personal or commercial project.

No. Your images stay clean — we do not add any watermarks or visual marks to your PNGs.

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Need to reduce PNG file size quickly? Learn how a PNG compressor works and how you can compress PNG images online without losing quality.

Mar 14, 2026