Modify a TEXT from a RSS????? HELP

Hey, I found a great websites to crawl content using followliker. The only problem that it pase the caption with unwanted text.


I want a filter that only pass the name of the photo and denies anyother text from the rss (for example autopromotion of webiste like asdfasd.com )


Is there any service to modify a given RSS?

My last option is to comission the work to a developer but I don't want to wait so I searching if there any way to do with stablished services.