I would like to change the content of the the feed

Hello!

I would like to change the content of the the feed by replacing/deleting words I define. So a search & replace add-on would be great.

This would be very useful because the author (e.x. newspaper) is always included many times in the text (in the title + at the beginning of the content + at the end of the content). This is a little too much and makes text unreadable. So I prefer deleting the author in the content and add a new line "Author: xyz" at the end of the article.