Highlight - Automated text highlighting in After Effects
The Highlight script takes all the hard work out of highlighting text in After Effects.
All you have to do is select your text layer, enter the text you want to highlight, and hit the highlight button. The script then does all the hard work for you, perfectly placing your new highlight lines behind your chosen word or phrase.
Want to create an animated underline instead of a highlight? Just check the underline option in the script panel and the script will create an underline instead of a highlight.