100% client-side • your files never leave your device

Convert BMP to PNG

Convert old-school Windows BMP files to modern PNG. Same lossless quality, way smaller files.

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How it works

  1. Drop a .bmp file (or any image) onto the page.
  2. The PNG output preset is already selected — hit Convert Now.
  3. Download the result. The whole conversion ran in your browser via WebCodecs or FFmpeg.wasm. No file left your device.

Why convert BMP to PNG?

Convert old-school Windows BMP files to modern PNG. Same lossless quality, way smaller files.

Is my file uploaded anywhere?

No. poqpoq is a static site — the page you're looking at is a bunch of JavaScript your browser downloaded once. It runs entirely on your device. There is no upload endpoint. When you open your browser's Network tab during a conversion, you'll see zero requests going out.

files go in poq, come out poq — nothing ever touches a server