Introduction

bmp2png / png2bmp is a pair of simple command-line utilities that convert between Windows BMP format and PNG (Portable Network Graphics).

This software is freeware.

Major changes

version 1.54 -> 1.60

• bmp2png now can read all types of BMP file, including 16/32 bits/pixel BMP, bitfield BMP, and RLE-encoded BMP.
• Added -P option to bmp2png, which allows to make one particular color fully transparent.

version 1.60 -> 1.61

• (executable) Fixed a file-corruption bug which was introduced in libpng 1.2.6.
• (source code) Added support for emx complier (not tested).

version 1.61 -> 1.62

• Added alpha channel support. (Added -A, -B and -R options.)

Download

The latest version is 1.62 (September 4, 2005)

b2p162w.zip - 49,767 bytes - Windows executable (Win32 console mode application)
b2p162d.zip - 149,317 bytes - DOS executable (Requires a PC with a 386 or higher CPU and DPMI support)
b2p162s.zip - 46,211 bytes - C source code (DOS/Windows friendly format. requires libpng and zlib)
bmp2png-1.62.tar.gz - 20,789 bytes - C source code (Unix friendly format, including a Makefile for linux)
 png2bmp-readdata.patch - 1,062 bytes - patch for a shared library version of libpng
 bmp2png-lpng15.patch - 221 bytes - patch for libpng 1.5.x