Convert BMP to PNG.
Turn a BMP into a lossless PNG in your browser. Every pixel is kept, the file shrinks, and nothing is uploaded.
The lossless upgrade
PNG keeps exactly the same pixels as BMP but compresses them. It is the natural replacement when you want a smaller file with no change at all to the picture.
Best for screenshots and graphics
Screenshots, UI captures, diagrams and pixel art are where PNG shines. Sharp text stays sharp, unlike JPG, which can blur fine edges.
Done on your device
The browser decodes and re-encodes the image itself. There is no upload, no queue and no daily cap.
How it works
- 01
Choose your BMP
Pick a file from your device. It is read by your browser and never uploaded.
- 02
Convert in your browser
Your browser decodes the bitmap and saves a lossless PNG on a canvas.
- 03
Download
Grab your PNG.
Runs in your browser. Your file never uploads
Lossless, pixel for pixel
Usually much smaller than the BMP
No watermark, no signup
Instant, no queue
BMP to PNG: lossless
PNG stores every pixel exactly (lossless) and keeps transparency, so there's no added quality loss. The trade-off is a larger file than a lossy format like JPG, great for graphics, screenshots and further editing, less so for photos you want kept small.
Common questions
Is it free?+
Yes. Convert BMP to PNG free, with no signup, no watermark and no daily cap, because the conversion runs in your browser.
Is my file private?+
This conversion runs entirely in your browser. Your file never uploads to a server.
Is any quality lost?+
No. PNG is lossless, so the image is identical to the BMP. Only the storage changes.
Why is the PNG smaller?+
BMP stores pixels raw. PNG compresses them without losing anything, which is especially effective on screenshots, diagrams and areas of flat colour.