Remove PDF pages if content is subset of next page

I have a lot of uni-slides where a list of bullet points gets shown page by page until one slide contains all points. For the sake of explaining a topic this is quite nice but for learning I would like to remove all the pages leading up to the overview. Then I wouldn't have to mindlessly scroll the pdf up and down when searching something. Are there any tools that support this operation/ has someone written a script that can delete those pages? **TLDR:** *PDF pages often only add one piece of additional information and remove none. What can I use to keep the page with all information?* I tried the answer from this [question](https://unix.stackexchange.com/questions/204040/extract-completed-slides-of-a-slide-show-pdf) from 2015, but it failed on all pdfs I tried with "Input Errors".