The fonts used in a map contribute a great deal to the appearance of a map. Usually, the same font family is used in many places: for example in the title, the imprint, the legend and the scale, and perhaps also for labels on the map itself. But maybe this or that font would look better? Until now, you had to change the font family in many places in the print layout in QGIS to try this out. This is tedious and takes so much time that people are reluctant to experiment with different fonts.
With my QGIS plugin Adjust Style (since version 1.9) this is now possible with just a few clicks: Simply open the plugin in the print layout window, click on “Replace Font”, select the old font (to be replaced) and the new font and click OK. You can also use checkboxes to fine-tune where the font is to be changed. To change the font of labels in the map itself, you have to do the same (as in the old versions of the plugin) in the main window (with the layers selected accordingly).