LR/Mogrify 2 is a post-process plugin for Lightroom that can embellish your images as they are exported from Lightroom. It's flexible interface allows you to add outer and inner borders, watermarks and text annotations to your images. It's also capable of exporting optimum JPEG images that are no larger than your requested size; great for uploading to web sites that limit the file size.
The plugin uses ImageMagick to process the images. ImageMagick is a collection of powerful, freeware command line utilities for processing images.
Implemented as a "post-process" plugin, LR/Mogrify 2 works in tandem with other export plugins. This allows you to process your images using LR/Mogrify 2 and still have them sent to your final destination using the export plugin of your choice.
LR/Mogrify 2 is a donationware plugin. The trial version limits the number of images that can be exported in one go to ten. Donating towards the development of this plugin will provide you with a serial number removes this restriction.