Convert BMP to PNG
BMP (bitmap) files are uncompressed, so they're huge — a single BMP can be 10× the size of the same image as PNG. Converting BMP to PNG keeps the image perfectly lossless while compressing it down to a sensible size, and adds transparency support that BMP lacks.
Free · No upload · Runs in your browser
Set the Format to PNG, then drop your BMP.
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or click to choose · PNG, JPG, WebP, AVIF, GIF, BMP, HEIC, TIFF, SVG — all accepted
Why convert BMP to PNG?
- Drastically smaller files — PNG compresses losslessly where BMP doesn't compress at all.
- Same pixel-perfect quality, since PNG is also lossless.
- Gain alpha transparency, which classic BMP doesn't support.
- PNG is accepted by the web and modern apps; raw BMP often isn't.
How to convert BMP to PNG
- 1Drop your .bmp file into the converter below.
- 2Set the output Format to PNG.
- 3Download the much-smaller PNG — quality is identical, both formats are lossless.
- 4Files are converted in-browser and never uploaded.
Frequently asked questions
Do I lose any quality converting BMP to PNG?+
No. Both formats are lossless, so the PNG is pixel-identical to the BMP — just far smaller.
How much smaller is PNG than BMP?+
Often 5–10× smaller, because BMP stores raw uncompressed pixels while PNG compresses them.
Related conversions
Need more than BMP → PNG?
The full Image Converter handles batches, resizing and more — all free and in your browser.