When comparing Jarnal (Java, cross-platform) vs Okular, the Slant community recommends Okular for most people. In the question“What is the best software to annotate a PDF?” Okular is ranked 2nd while Jarnal (Java, cross-platform) is ranked 4th. The most important reason people chose Okular is:
Easily trim margins either automatically or manually for easier reading
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Collaboration over network (although limited)
It is possible to connect multiple Jarnal clients to a single Jarnal server for collaboration on the same document. However, only one person can make changes at a time.
Pro Free and open-source (GPL license)
Pro Trim margins
Easily trim margins either automatically or manually for easier reading
Pro Free and open source
Pro Table selection
Pro Featureful
Pro Tabbed view option
Pro Supports touch interaction
Cons
Con Some actions are not intuitive
Opening a PDF into Jarnal is not intuitive. The only way I found is by using the supplied shell script. I could not find how to do it from within the UI.
Con Written in Java using Swing toolkit
As with most Java apps, the UI looks alien to all operating systems.
Con Poor HiDPI support
You may have to tinker with QT__SCALE_FACTOR environment variables to get the desired size and not blurry content (this is a bug; see https://bugs.kde.org/show_bug.cgi?id=362856 and https://bugs.archlinux.org/task/54688)
Con No XFA Adobe Forms support
Cannot fill PDF Forms created with Adobe.
Con No "fit to page" option under printing settings
You can only print the content as given so, when you receive a bigger or smaller image thant the default of the printer, you will have to edit it first on other editor.
Con Requires many KDE libraries
Con Slow scroll
Its new ultra-slow-scroll for PgUp and PgDn makes it unuseable.
Con No search results overview
You have to navigate to next/previous hit one by one
Con No middle-mouse auto-scrolling
Instead of scrolling automatically when holding down the mouse wheel and dragging, it instead zooms in or out, in contrast with many other programs.
Built By the Slant team
Lustre recommends the best products at their lowest prices – right on Amazon.