ramakantsangare 0 Light Poster

Hi guys
I have Ned Graphics software for textile designing
Which support HR2 format (eg. tiff,jpeg,bmp etc.) I am serching for batch processing software who can convert numbers of files of HR2 in to tiff format at once also looking for thumbnail printing option like contact sheet in Adobe Photshop but in PS (photoshop )or any other image viewer it reduces or enlarge the image to fit into thumbnail size.
I am looking for such software which will only crop the image if is bigger than thumbnail size not reduce
Pls help me know such software
Thanks
Ramakant