This is a simple user-version of the BJBRserv server application. With it you will be able to resize entire folders of jpeg images to the dimensions that you require, as well as optionally apply branding with a logo. The software is freeware.

This program is also available in a command line version for use in web servers or other roles.

at32 Batch JPEG Branding Resizer Features
Treats JPEG and JPG images.
Apply your settings to an entire folder contents.
Smooth anti-aliasing when shrinking images.
Smooth bilinear filter when enlarging images (avoids blocky images).
Choose to maintain aspect ratio or use resize to a precise resolution.
Apply a logo, and select it's relative position.
Transparency option for logo (not limited to rectangular logos).
Choose a logo alpha setting allowing for an attractive transulcent effect.
Determine the quality setting of JPEG's output from the program.
Very fast processing.