When you have privacy settings, what you really have is a lie.
It starts out with good intentions, like those in this post, but eventually everyone forgets that the platform still sees your posts and does not give a shit about selling them.
I would rather acknowledge from the very beginning that this entire system is not private, so there is never such a misunderstanding.
Everyone should post and comment with caution, just like you use caution with what you say in public places.
There are a bunch of online tools that are free and let you upload a PDF to have it go through OCR.
Just Google “Free PDF OCR” and click through all the ads to upload, then give them a temporary email address to get a download link to the finished product.
Hot tip: There are free temporary email address sites too, if you need one to avoid getting on their ad lists.