By default, draw.io uses an A4 paper size in a portrait orientation. You can change the paper size and the orientation via the
Format
panel or the menu.
Make sure you have nothing selected in your diagram so you can see the
Paper Size
settings in the format panel on the right.
Select a new
Paper Size
from the drop down list.
Click on either
Portrait
or
Landscape
to change the page orientation.
Tip:
If your drawing canvas does not indicate the page edges, make sure the
Page View
checkbox is enabled in the
Diagram
tab on the format panel.
Change the page setup
Select
File > Page Setup
.
Select a new
Paper Size
from the list, and change the page orientation to
Portrait
or
Landscape
.
Use a custom paper size for your diagram
Make sure nothing is selected in your diagram so you can see the
Paper Size
list in the format panel on the right, or select
File > Page Setup
.
Select
Custom
from the
Paper Size
list.
Enter the custom height and width of your page in inches.
Learn more about global diagram and editor settings
