Links lost in merged PDF

[MarcPinnell]

I am observing web links being lost in merged documents. All packages are up to date (via composer). I have verified that the link exists and works in base PDF, but after merging, the link "blue" type indicating the link is still there, but the link functionality is lost.

I found in past issues the fix of:

$template = $fpdi->importPage($pageNr, importExternalLinks: true);

But it doesn't appear to make any change in the final merged PDF.

I am merging like this:

$merger = new Merger(new TcpdiDriver);

$merger->addFile($path.'pdf_cat_front.pdf');
$merger->addFile($path.'tmp/cat_guts.pdf');
$merger->addFile($path.'pdf_cat_back.pdf');
$createdPdf = $merger->merge();

Is that correct? The "tmp/cat_guts.pdf" file is the one with the links. The merge works great, other than the missing links.

Thanks in advance for any help you can give.

[kaystrobach]

What version do your pdfs have? Can you provide minimal sample files please?

[MarcPinnell]

Looks like the file with the links is a PDF 1.4. The other merging in files are 1.7.

Files:

pdf_cat_back.pdf
pdf_cat_front.pdf
cat_guts.pdf

[MarcPinnell]

@kaystrobach - Were those files what you were looking for from me? Any luck figuring it out?

[moerphie]

I have exactly the same problem.
It seems as though the problem has been occurring for some time: #22 & #88

[kaystrobach]

sry, had no time to check it. Just could verify, that various pdf formats have different formatting for links, I doubt that might cause the problem.