Is the text unique if it is indexed by the PS as pdf?

Question

Search Engine Optimization

Hello!
The question is: Is text unique if it only occurs in PDFs on different sites?
Text uniqueness analyzers give different results. ETXT, text ru, content watch, show uniqueness 100. Advego - shows not unique.
And maybe you can tell me - what service (or bundle) do you use to check the uniqueness of the text?

Answer 1

If you rephrase your question, you get something like this:
"Maybe Google still won't be able to find what advego found? Is it worth feeding such content to Google or I'll burn myself?" :)
As for me - if at least one service has found a match, no matter in pdf, in excel or somewhere else, it will easily find (and most likely found it a long time ago) and Google.
Does it make sense to add such content to yourself?

Answer 2

Not