Change canvas size

[CharonM72]

A node to change canvas size (extendable with transparency for RGBA, or maybe a color or something for other colorspaces) would be useful.

[RunDevelopment]

Just to clarify: Using Paint.net as an example, you basically want this, right?

[theflyingzamboni]

This is already (largely) accomplished by Create Border. We should probably expand on what that node can do. Right now it lacks a version to control border sizes independently (like with crop), and the idea of a color-picker for constant color is still unimplemented as well.

[CharonM72]

Yes, something like that from paint.net.
I'm trying to see if it's possible to automate a process I currently do manually for converting a large number of images into a specific aspect ratio and size without loss in quality. Right now it has a lot of the tools needed but it still missing a few. I submitted a somewhat broader but kind of different issue in #798.

[simolg]

"canvas size" is a different method to change the image size:

• canvas to bigger size is similar to "create border" method
• canvas to smaller size is similar to "crop" method

they are similar methods but not the same!

in many cases "canvas size" is very useful:
the destination of the new canvas must be specified in pixels,
after setting an anchor, the image is refitted (automatically)

if it comes out it creates edges, if it shrinks it crops (or even a mix of the two)

this feature would be very welcome
Thanks again