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Add to SafariWhen comparing KDE Okular vs Adobe Acrobat Reader, the Slant community recommends KDE Okular for most people. In the question“What are the best PDF viewers for Windows?” KDE Okular is ranked 5th while Adobe Acrobat Reader is ranked 17th.
Specs
Question Ranking
Pros
Pro Free and open source
Pro Trim margins
Easily trim margins either automatically or manually for easier reading
Pro Featureful
Pro Table selection
Pro Tabbed view option
Pro Supports touch interaction
Pro Real All PDF
There isn't a PDF file which cannot be read by this app.
Pro Cloud compatible
Can connect to Dropbox and Google Drive.
Pro SD location recognition
Locate SD location and scan it quickly.
Pro Multiple view modes
Page, scrolling, two-page (in landscape) and a reflow mode.
Pro Just works
The app reads all PDF files.
Cons
Con No XFA Adobe Forms support
Cannot fill PDF Forms created with Adobe.
Con Requires many KDE libraries
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.
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 search results overview
You have to navigate to next/previous hit one by one
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 Slow scroll
Its new ultra-slow-scroll for PgUp and PgDn makes it unuseable.
Con Does not work without log-in
Adobe is one of the biggest data harvesting companies.
