Made Good Designs

BMP to PNG Converter

Convert BMP to PNG online for free — lossless, around 80% smaller than BMP, with full transparency support. 100% in your browser, batch convert, nothing uploaded.

100% private — your images never leave your browser. Conversion happens on your device; nothing is uploaded.

100% private — runs in your browser
🔒 100% private — your images are converted in your browser and never uploaded. Works offline; nothing is sent to a server.
Drop BMP images here or click to choose — convert several at once

Everything runs in your browser — your images are never uploaded, and metadata (EXIF/GPS) is stripped automatically when the image is re-encoded.

How to use the BMP to PNG Converter

  1. Drop your BMP images here, or click to choose.
  2. Conversion runs instantly in your browser.
  3. Transparency and detail are kept losslessly.
  4. Download each PNG, or all as a ZIP.

What you can use it for

  • Get a lossless, web-friendly PNG from a BMP
  • Modernise old bitmap graphics
  • Reduce file size versus uncompressed BMP
  • Batch-convert privately

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  • Image Converter — convert between PNG, JPEG, WEBP, AVIF, GIF, HEIC, and more, with batch export
  • BMP to JPG — shrink uncompressed bitmaps by up to 90%
  • PNG to JPG — convert PNG to JPG with a background colour for transparency
  • JPG to PNG — lossless JPG to PNG, batch convert
  • HEIC to JPG — convert iPhone HEIC photos to JPG, GPS stripped
  • HEIC to PNG — convert iPhone HEIC photos to lossless PNG
  • WebP to JPG — convert WebP to JPG with a quality slider
  • WebP to PNG — convert WebP to PNG and keep transparency

Frequently asked questions

Is BMP to PNG conversion lossless?

Yes. PNG keeps every pixel exactly while compressing the file, so there is no quality loss.

Is PNG smaller than BMP?

Almost always — PNG is typically around 80% smaller than an uncompressed BMP, with no loss in quality.

Does PNG support transparency that BMP doesn't?

Yes. PNG has a full alpha channel, so you can keep or add transparency.

Can I batch convert and download a ZIP?

Yes — convert many BMPs at once and grab them all in a single ZIP.

Is it free with no watermark or limits?

Completely free, no watermark, no sign-up, and no file-size limits beyond your device's memory.