Dropresize is a freeware specially useful for bloggers, who upload images to their blogs alot. Now instead of opening each image and then resizing it, you can simply drop that image in a defined folder, and dropresizer will automatically resize it to your requirement, all in background.

This application runs in the system tray and monitors a folder, and any image that you drop in that folder will be resized according to your specifications.

1- Download this utility and launch it.

2- Click on Browse and select the folder which you want dropresize to watch, and specify the Resize Settings.

You have 2 options, adjust to height or adjust to width. Clcik OK. Now drop any image in that folder which you want to resize.

Disadvantages:

 - Only jpeg images are supported.

 - It does not keep backup of the images resized, so be careful when dropping images to that folder.