Way to batch rename to correct extension?

[Striker1211]

A neat function in irfanview is that you can open a file with no extension and it will read the header and ask you to rename it. Is there any way to irfanview to do this in batch mode? I transfer a lot of files from Mac System 7-9 PCs and need the pictures to have extensions for windows. Thanks!

[Laurent]

Hi Striker1211,

If all the images in a directory have no extension and need the same extension (for example ".jpg"), you can do this with the following command (in a command window):

ren *. *.jpg

Laurent

[Striker1211]

The files are all different types like Adobe PhotoDeluxe, GIF, JPG. Thanks though.