This was happened when I first tried to run SweetHome3D Portable. As it was a portable software, I didn't want to be bothered by installing it. The apps was running, but as you can see at the picture above, the fonts were way too big on my screen. The original bash script for running the app was: exec "$PROGRAM_DIR"/runtime/linux/x64/runtime/bin/java -Xmx1024m -classpath "$PROGRAM_DIR"/lib/SweetHome3D.jar:"$PROGRAM_DIR"/lib/Furniture.jar:"$PROGRAM_DIR"/lib/Textures.jar:"$PROGRAM_DIR"/lib/Examples.jar:"$PROGRAM_DIR"/lib/Help.jar:"$PROGRAM_DIR"/lib/batik-svgpathparser-1.7.jar:"$PROGRAM_DIR"/lib/jeksparser-calculator.jar:"$PROGRAM_DIR"/lib/iText-2.1.7.jar:"$PROGRAM_DIR"/lib/freehep-vectorgraphics-svg-2.1.1c.jar:"$PROGRAM_DIR"/lib/sunflow-0.07.3i.jar:"$PROGRAM_DIR"/lib/jmf.jar:"$PROGRAM_DIR"/lib/java3d-1.6/j3dcore.jar:"$PROGRAM_DIR"/lib/java3d-1.6...