How to validate digital signature in a document in Linux

In Linux, libreoffice-draw has the ability to open and validate digital signatures. Unfortunately, this functionality is broken as of today in the seahorse or gnome-keyring on LinuxMint 19.2 Tessa. This is due to the Ubuntu repository not having an updated package or a bug in seahorse. Without digging into above, a different program named PDFStudioViewer … Continue reading How to validate digital signature in a document in Linux

How to annotate PDF files on Android devices using Xodo

There are several tools to annotate PDF files. Some are non-free like Adobe Acrobat Writer and others, and some are free like Xournal on Linux. Xournal is a very powerful annotator, whereby, the original file is untouched, but a separate file of the annotations done on top of the original PDFs is maintained. You can … Continue reading How to annotate PDF files on Android devices using Xodo

How to view XPS file created on Microsoft Windows in Linux

Method 1: The okular application in KDE allows you to open and view XPS files created on Microsoft Windows. You can then print the file from okular. Method 2: However, if you want another method, where you do not have to install KDE and it's several libraries, you can follow the steps below: $ sudo … Continue reading How to view XPS file created on Microsoft Windows in Linux

How to make Exported PDF editable in LibreOffice

LibreOffice enables a very useful feature to Export PDF files from the File -> Export as PDF... menu option. LibreOffice is a cross-platform, open source and free Office Suite available for use on Windows, Linux and more. When you select that option, it shows a dialog where you need to select the pages to export, … Continue reading How to make Exported PDF editable in LibreOffice

Annotate PDF files in Linux (Xournal, Okular, Evince, PDF X Viewer)

You can use the following tools in Linux, to annotate PDF files: 1. Xournal from http://xournal.sourceforge.net/ 2. Evince on your Gnome Desktop 3. Okular (see this post) I tend to go with Xournal. Xournal and Okular support highlighting text, whereas evince currently has the ability only to add text. The above tools can also be … Continue reading Annotate PDF files in Linux (Xournal, Okular, Evince, PDF X Viewer)