A vector image can be scaled to any size and remain sharp. However, we recommend you keep within the dimensions suggested under ‘Specifications’ for each of our map products.
Blowing up larger than about 300% of the initial size of your map file may compromise the accuracy and integrity of coastlines, roads and other details.
Maps with a lot of text will be difficult to scale smaller than the recommended size in terms of legibility. However, you can turn off text layers if labels start to crash into each other.