New answers tagged printing
If you're only interested in printing then map onto multiple A4 or A3 sheets then you don't need to do this in QGIS at all. If you have the A0 as a PDF adobe reader will allow you to split it and print it over multiple sheets? Example below shows print dialog for an A2 map being split over 4 A4 sheets.
You can try with plugin "Grids for Atlas" and generate atlas again. Make the size of the composer that suits you and the grid will be generated. Maybe I dont understand you. This is a page size: and this is a frame size:
Have you tried either of the printing solutions listed here? http://leafletjs.com/plugins.html#printexport
Top 50 recent answers are included