Toolman

Convert BMP to PNG

Drop one or more BMP files below to get PNG back. Conversion happens inside your browser using a canvas — the files never leave your device, so there is no upload wait, no queue and no privacy question.

Drop BMP files here or click to choose

Multiple files supported · nothing is uploaded

PNG is lossless — no quality setting needed.

BMP vs PNG

BMPPNG
Full nameBitmapPortable Network Graphics
CompressionLosslessLossless
TransparencyNoYes
Best forGraphics with flat colour and sharp edgesScreenshots, logos and anything needing transparency

What changes in this conversion

About BMP

BMP stores pixels with essentially no compression, which makes files enormous. It survives mainly in legacy Windows software and as an intermediate format.

About PNG

PNG is a lossless raster format with full alpha transparency. It is the right choice for screenshots, logos, icons and line art, and a poor one for photographs, where it produces files several times larger than JPEG.

Frequently asked questions

How do I convert BMP to PNG?

Drop the file on the converter above, adjust the quality or size if you want, and download the result. No account, no email, no upload.

Are my files uploaded to a server?

No. The file is read with the browser's FileReader API, drawn to a canvas and re-encoded locally. You can disconnect from the network after the page loads and the converter still works.

Is there a file size limit?

Only your device's memory. There is no server-side cap, no queue and no daily limit. Very large images — beyond roughly 50 megapixels — may fail on mobile browsers, which limit canvas dimensions.

Will the quality drop?

PNG is lossless, so nothing is lost in this step — although detail already discarded by BMP cannot be recovered.

Can I convert several files at once?

Yes. Drop as many as you like and use "Download all". Each file is converted independently in your browser.

Is there a watermark?

No. The output is exactly the converted image, nothing added.

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