Sorry for the spelling and phonetic errors in the text.
Owner and main writer of MintGuide.org is not a native English speaker.
Opportunities Master PDF Editor:
-alter any element of a PDF file
-create new PDF and XPS, or edit existing ones
-add or edit bookmarks in the PDF-files
-encrypt and protect PDF files using 128-bit encryption
-convert XPS files to PDF
-add PDF files of various controls, such as buttons, checkboxes, lists, and so on
-highlighting text and add sticky notes
-import/export PDF pages in commonly used graphic formats, including BMP, JPG, PNG and TIFF
-separation and integration of PDF files
sudo apt purge master-pdf-editor