Do I lose anything converting BMP to PNG?

Nothing. Both formats are lossless, so the decoded image is identical. You only lose file size.

Should I use PNG or JPG?

PNG if you want the image preserved exactly, which is usually why it was a BMP in the first place. JPG if you need it very small and can accept some loss.

Free converter

BMPPNG

BMP to PNG Converter

The best conversion on this page, and the one people ask for least. PNG is lossless like BMP but actually compresses, so you get a pixel-for-pixel identical image in a fraction of the space — with nothing given up at all. There is essentially no reason to keep a still image as a BMP.

Download for Windows

Windows 10/11 (x64) · Free · No account

Drop in your files — PNGs land in the folder you pick — identical images, much smaller files.

Why convert

Why convert BMP to PNG

BMP and PNG both store the image losslessly. The difference is that PNG compresses and BMP does not, so the PNG is typically a small fraction of the size while being mathematically identical when decoded. Unlike converting to JPG, this costs you nothing whatsoever.

Shrinking a folder of BMP files without losing anything.
Making old uncompressed images usable on the web.
Archiving legacy images at a sane size.
Preparing BMP output from equipment for normal software.

How it works

Convert BMP to PNG in a few clicks

1
Drop your BMP files in
One or a folder full, at any size.
2
Choose PNG
No quality setting — nothing is lost. Palette optimisation shrinks flat-colour images further.
3
Get the PNGs back
In the folder you chose, BMPs untouched.

The details

BMP to PNG, at a glance

Engine: sharp (libvips)
Output: PNG, lossless
Quality loss: None — both formats are lossless
Typical saving: Large, and free of any quality cost
Where it runs: Your own PC — nothing is uploaded
Limits: None — no file count, no file-size cap, no watermark
Platform: Windows 10/11 (x64)

Questions