It's doable, but it's only the easiest cases. If it's a one off script, or some automation you give as a base to a human to review afterwards it can be a good f

It's doable, but it's only the easiest cases. If it's a one off script, or some automation you give as a base to a human to review afterwards it can be a good first step. If it's supposed to be a somewhat final result, ran against a dataset you have little control over (people sending you PDFs they made, vs. PDFs coming from a know automated generator) you'll hit all the other not so edge cases very fast. Like, otherwise invisible characters inserted in the middle of your text, layout that makes no logical sense and puts the text in a weird order but was fine when it was displayed on the page, characters missing because of weird typographic optimization (ligatures, characters only in specific embeded fonts etc.). Basically everything in the article is pretty easy to find in the wild.