Why convert BMP to PNG?

BMP is old and usually uncompressed, so files are large and not well supported on the web. PNG is lossless like BMP but compressed, so you get the same quality in a much smaller, web-friendly file.

Is my image uploaded?

No — the conversion runs entirely in your browser; your file never leaves your device.

No — PNG is lossless, so the image is identical, just far smaller and more compatible.

BMP to PNG Converter — Free, No Upload

BMP to PNG, in your browser

BMP is an old Windows bitmap format that’s typically uncompressed — meaning big files that many web platforms and apps don’t handle well. Converting to PNG keeps the exact same quality (PNG is lossless too) but compresses the file dramatically, giving you a modern, web-friendly image. Mynify converts on your device, with nothing uploaded.

Same quality, much smaller

Because both formats are lossless, the conversion doesn’t change the image — it just stores it far more efficiently. Expect a large drop in file size with no visible difference.

When to use it

Uploading a BMP to a site or app that expects PNG.
Shrinking a bulky uncompressed bitmap.
Modernising old graphics into a supported format.

Prefer an even smaller photo? BMP to JPG compresses photographs further. Free, unlimited, no signup, no watermark — processed entirely on your device.

BMP to PNG. Smaller, web-ready.

Drop your file here

BMP to PNG, in your browser

Same quality, much smaller

When to use it

Frequently asked questions

Related tools