Adding Extension

Hi @Letizia34759760wh0s,

Hope you are doing well. Thank you for writing in!

Acrobat Extensions for Safari are available in the desktop version of the application. The mobile does not have the option to allow extensions for such use. 

You can install the freeware Acrobat Reader Mobile to open the files directly from Safari.

To open a PDF from Safari to Acrobat, you can use the share or export button-> change the format to PDF-> Scroll down in the share selector-> Open PDF in Acrobat.

Hope this helps.

-Souvik