Fill Form FDDF FPDF-Merge Error Fast Web View mode is not supported

Question

I try to use FPDF to fill pd form of this way

$pdf = new FPDM('Form.pdf');

but i get

FPDF-Merge Error: Fast Web View mode is not supported solution

PD:

In this answer, Show this soution;

cpdf in.pdf -o out.pdf

but i don't know the process to use cpdf

Thank you.

Answer 1

Go into the PDF in Adobe Acrobat. Click Edit->Preferences Go to Documents Uncheck the 'Save As optimizes for Fast Web View'

Save the document.
That resolves that error for me. After doing so, I received a compression error and needed to use pdftk to resolve that issue.

Answer 2

I know it's an old question but for anyone else having issue with this - I got this error after editing and saving pdf file that was already converted by pdftk. The solution was to run it again through the pdftk

pdftk 55.pdf output 555.pdf