Main page of BERLiNiB: As good as Adobe PDF Reader when you use Linux Adobe PDF Reader is available for all commercial platforms, including all phone types, see links on top of main berlinib website. On Linux, there are numerous alternatives to Adobe PDF Reader, and these work for all standard PDF format although some late additions to the PDF standard may require Adobe's own reader. If you are using Linux and there is a compatibility need for a particular Adobe version, you can go to such as askubuntu dot com to search up how you install Adobe under Wine, allowing Adobe's own readers to work in Linux. Though the links on top of the berlinib website mention 'linux', Linux has its own PDF reader alternatives. A full Linux usually has one already installed. At any up-to-date Linux related eg to Ubuntu, such as KDE Neon, you can install a good PDF reader like 'evince' or 'okular' by open the program called Terminal and in it write either sudo apt install evince or sudo apt install okular and answer the normal questions it asks. At Fedora, there are similar instructions; and there are many more PDF readers available at Linux. Evince is elegant, fast, and allows effortless copying of text. Once you have decided on which PDF reader to use, eg, evince, you can set your browser to use it. In Firefox or Seamonkey or related products, this is usually the way: under "General", scroll to "Applications". In that list, find "Portable Document Format" and click to the right of it, select "Use other", and type in the name of the program with /usr/bin in front, eg /usr/bin/evince (or /usr/bin/okular). If this doesn't work, open a terminal and type whereis evince and it will tell you.