I have just started working with Ubuntu.

My work includes a lot of books that to be read. Hence while reading, I need to --comment & highlight the characters in the form of PDF & DJVU file.

I have installed Document Viewer and qpdfviewer. But both of these softwares do not have this option.

I can't find any other in Ubuntu software updater. So Please suggest me some softwares according to my needs.

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2 Answers

You can use Xournal - Ubuntu Apps

Xournal is a GTK+ application for notetaking, sketching and keeping a journal using a stylus. It can also be used to add annotations to PDF files.

To install:

sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install xournal

Optional, to remove Xournal, run:

sudo apt-get remove xournal

DjVuLibre which is an implementation of DjVu, including viewers, browser plugins, decoders, simple encoders, and utilities.

Okular is a universal document viewer with support for advanced document features, such as highlights,annotations, forms, and embedded files.

To View djvu files using Okular :

apt-get install okular-extra-backends

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Yes, you can comment in Document Viewer(or evince), but I didn't find any entries for highlighting. Here is how to add a comment in Document Viewer(or annotation):

In the Document Viewer, you may have a side pane, or you can manually open it by pressing F9

In the Side Pane, there is a few options on the top, just like this:

Then you can select the option of Annotations, as shown in the picture. Then select the Add button.

Click on the Pen button to add one.

It will pop out a little white cross, click on anywhere on the document to start comment, or add an Annotation.

For the Highlighting function, you need to ask other people.

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