Convert BMP to PNG on right-click in Windows 7

Solution 1:

Getting something with one click is always tough, but this might be what you're looking for.

XNView

Use it in conjunction with the shell extension, which offers a host of image manipulation options on right click.

Addictive Tips: XNView shell extension

Solution 2:

Previously called "Right Click Image Converter", ImageBadger is an image converter which has the capability to convert multiple images with right-click.

The program is a shareware. There's a try & buy version on the official site.

Solution 3:

GIMP has a batch mode: see http://www.gimp.org/tutorials/Basic_Batch/ if GIMP is too heavy-weight for this application, there are probably other smaller packages that will do this which you can substitute.

You can create your own context item using "send to" and a batch file.

see: http://www.howtogeek.com/howto/windows-vista/customize-the-windows-vista-send-to-menu/

command line parameters are %0-%9 (0 is the program, 1-9 are the parameters)

With some experimentation, you can probably roll your own. I have never attempted to send a list of files with this method.