Daniele

This isn't difficult per-se, however it would help to have a complete list of all the modification that should be applied automatically

Also adding page number may be useful.

Setting a field read-only might be a way, however pdftk works differently; afaik it replaces each /Field instance with a simple text object. :confused:

What you are suggesting is not "flattening" thou. The output pdf will still present data fields (widgets) . Flattening as pdftk does is replacing the data field with text.

Multiple pdf merged and flattened: [Ichiro Yasuhigo.pdf](https://github.com/py-pdf/pypdf/files/11005315/Ichiro.Yasuhigo.pdf) One of the editable source: [sheet_all.pdf](https://github.com/py-pdf/pypdf/files/11005318/sheet_all.pdf)