Editing title and author blows up file size from 2 MB to 14 MB

[melyux]

I used the app to simply add a title and an author to a PDF file. Upon saving, the file size had changed and become much larger. Why is the content of the PDF changing when it's supposed to only be changing the metadata?

[zaro]

@melyux It is not supposed to change. Is it possible that you provide a file with which this occurs ?

[melyux]

@zaro Sure, I can send it to the email on your blog

[zaro]

@melyux I spent almost all day trying to pinpoint where this problem comes. But definitely it's something related to Apache PDFBox.

The problem is even if I find what causes it I am not sure how to approach fixing it. The version of PDFBox the editor uses is really old 1.8, but newer versions support only the newer PDF/A spec, and are not usable for generic metadata editing.

Will keep you updated if I find something more.

[melyux]

Bless you. What about using exiftool as the internal tool?