OCR on pdf with PDF+Text

I use scanbot on iPhone which has OCR. After I import into DT3 it shows up as PDF+Text and I am able to search it. As an example, original file size is 1000KB.

Then I use DT3 for OCR and file size drops to 337KB.

Question is, does it “hurt” the run OCR on pdf that already has text layer? I am not sure which product has better OCR (I would guess DT3).

Thank you.

It generally shouldn’t hurt it, but I wouldn’t say it’s something I’d do habitually.

One thing you may note is the text is detected differently in each engine. This could be a good or bad thing.

Also, differing levels of quality and compression can affect the file size and appearance.