[muawiyah]

The 10 to 12, and back to 10 point change is about what one of those small scanners that tracks a bar across a document would give you.

Typically you'd do that to capture the text, not to capture the image. Then you'd convert the text to something more readable for later printing.

There's nothing at all unusual about what you are seeing in that scanned image ~

[exDemMom]

If you haven’t noticed, that .pdf is an image file, not a text file, so what you said about capturing the text doesn’t apply.

Even if a document is scanned and converted to a .pdf text file, the font tends to be highly similar to the font of the original document. I know this because I’ve converted hundreds of pages to .pdf files.