Resize canvas in Affinity designer

1- Open Affinity designer.

2- Open your project.

 

3-  Ensure your project is unselected and select the Document setup icon.

 

4-  A new window will appear. Here you can change the canvas size.

 

5-  if you want to keep the aspect ratio ensure the padlock is locked. if you want to change the dimensions and not keep the aspect ratio click on the padlock to open it.

 

6- Once you are happy with the dimensions you want click ok and the resized canvas will appear in your design space.

Design was from designbundles.net  and the design is called 30 funny cards-poster collection