To anyone facing compilation errors - here is a list of all the packages I had to install on 18.04 to get this to work: sudo apt install extra-cmake-modules libkf5archive-dev libqt5xmlpatterns5-dev kio-dev @caig: Thanks a lot for all the work you put into this. @KDE maintainers: Seeing how this package has been available for 5 years now, I really hope that someone will finally package it up and ship it in Debian / Ubuntu. It's really amazing how many hooks users have to jump through just to get a simple thumbnailer like this working...

thanks tuve que instalar estas librerias adicionales libkf5archive-dev libqt5xmlpatterns5-dev ya puedo ver las miniaturas de los epub excelente trabajo

Thanks for the terrific job. Installed following the Installation from source (KF5) instructions on your github page on manjaro 16.06.1 and everything works. However, on both on linux mint 18 as well as kubuntu 16.04 terminal output is: -------------------- mint@mint ~/bin/kde-thumbnailer-epub-1.1/build $ cmake -DKDE_INSTALL_USE_QT_SYS_PATHS=ON -DCMAKE_INSTALL_PREFIX=`kf5-config --prefix` .. -- The C compiler identification is GNU 5.4.0 -- The CXX compiler identification is GNU 5.4.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done CMake Error at CMakeLists.txt:5 (find_package): Could not find a package configuration file provided by "ECM" (requested version 1.0.0) with any of the following names: ECMConfig.cmake ecm-config.cmake Add the installation prefix of "ECM" to CMAKE_PREFIX_PATH or set "ECM_DIR" to a directory containing one of the above files. If "ECM" provides a separate development package or SDK, be sure it has been installed. -- Configuring incomplete, errors occurred! See also "/home/mint/bin/kde-thumbnailer-epub-1.1/build/CMakeFiles/CMakeOutput.log". ------------ Would much appreciate any suggestions on this as well as the build instructions for the .mobi thumbnailer you mentioned in a previous post. Thanks again.

Thank you for update to plasma5. Would you like to update chm thumbnailer to plasma 5?

Hi, caig. What about a Plasma version now that KDE 4 is unmanteined? I can't live without it! ;-)

I notice you are building this on openSUSE buildservice. Would it be possible to submit it to KDE:Extra so other openSUSE users can install it more easily?

Should I be getting preview thumbs for .mobi files?

Hello caig, thanks for your work. What can I change, to get a thumb displayed. I did the one-click install and started dolphin again, but no thumb is displayed (also not for pdf). >Configure Dolphin -> General -> Previews and select ePub documents.< I cannot find a field "epub" in any of dolphins menues. I use: german openSuse 12.2; Linux 3.4.11-2.16-desktop x86_64 KDE: 4.8.5 (4.8.5) dolphin Version 2 in YaST2: libepub is not there but libepub0 libepub-devel is not installed okular works fine with mobi, pdf, djvu and epub thank you greetings micca

Well, I hope I've found something relevant. When id for the cover item in content.opf is exactly "cover", thumbnail is produced. But in many epubs the id is the whole file name, extension included: <item href="Images/cover.jpeg" id="cover.jpeg" media-type="image/jpeg" /> These ones aren't thumbnailed.

I can see the same covers I saw in the previous version. Nothing more. They have in common they are from epubs generated by Calibre, they use svg to scale covers and they use preserveAspectRatio="none" attribute. This makes less than 1% of my epubs (none of them produced by me).