PNG to BMP

BMP is an old, uncompressed Windows image format. Some older programs, machine controllers or microcontroller tools expect exactly this simple format. PNG stores your pixels losslessly, BMP outputs them as raw image data with no compression.

The PNG is decoded locally and written as a valid BMP - 24-bit for opaque images, 32-bit when an alpha channel is present. Nothing is uploaded.

You rarely need the route back to BMP for normal sharing, but regularly in technical niches: embedded displays, older industrial or point-of-sale software and some microcontroller hobby projects expect exactly this raw, easy-to-read pixel data without tricky decoding. Because the method is lossless on both sides, every pixel in the BMP matches the PNG exactly; nothing is added and nothing is lost. Just plan for the larger storage need, since without compression the file grows noticeably with the pixel count.

If your PNG has transparent areas, the tool writes a 32-bit BMP and stores the alpha channel along with it; if the image is fully opaque, the leaner 24-bit format is enough. That keeps the result as small as possible while still matching what the target software expects.

Specifications

In 3 steps

1. Drop or tap your PNG file.
2. The tool writes an uncompressed BMP.
3. Download the BMP - with no upload.

Limitations: BMP is uncompressed: the file usually gets noticeably larger than the PNG. That is normal and intended. Very large images need correspondingly more memory. Embedded metadata such as capture date, camera and GPS location does not survive the re-encode - only the image orientation is baked into the pixels beforehand.

FAQ

Related tools

BMP to PNG · BMP to JPG · PNG to JPG · JPG to JXL · PNG to JXL · TGA to PNG