I want to remove all nonHTML content pages containing PPTs, DOCs ,PDFs from google custom search. I have tried various url patterns in my custom search engine , but it is still returning pdfs and ppts in search results .
Search features → Advanced → Websearch settings → Query Addition
Query Addition: Appends additional query parameters to the search. Search results will be served using "OR" logic. Supported values: Any search term to add to user query.
Advanced Google Site Search features
https://support.google.com/customsearch/answer/3037004?hl=en
I added -filetype:pdf -filetype:ppt -filetype:doc and I'm not getting PDFs, DOCs, PPTs in results.