Editing pdf in DT 4 damage the pdf's text layer

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,
1

I purchased a pdf file of a book from an online store (PDF+Text (not OCR)).

When I make some edits (such as annotations or page deletions) on DT4 and save it, the text layer will be damaged. (Actual operation: If you click Command+S, the Annotations is still normal, but if you jump to another file (At this time, DT4 will be stuck for a while, (which is probably destroying the text layer of pdf. and the file size increased from 17M to 28M) and then jump back, you will see the change. )

This issue won’t occur in DTTG 4 or other pdf apps (including Preview), but as long as you save back to DT4 and edit then save, then the problem arises.

a similar problem I found

There is another question about the scanned pdf for DT4.
Import scanned pdf → select some text → Add link → Save
Someday I want to delete the link. When deleting, the DT4 will get stuck for quite a while (depending on the size of the scanned pdf file, it can take from a few minutes to tens of minutes). Once it’s done, the file has been OCRed. Is this a pre-set function?

2

Nothing has changed in regards to the situation in the previous post you linked.

Regarding the second question, read and follow this…

3

Thank you for letting me know the latest progress.

Judging from the connection article and the situation I encountered and the tests carried out, Apple’s pdfkit is a problem, but it seems that the possible compatibility problems of DT4 and macOS cannot be completely ruled out (there is no similar problem in Preview.app)

4

While Preview also uses PDFKit, Apple is known to make changes privately, changes we have no access to inspect or use.

5

That’s true. :laughing:

Many thanks

6

You’re welcome and trust me, unresolved PDFKit issues frustrate us as much as all of you (and potentially more so) :smiley:

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