You Asked: How Do I Resize in Krita?

(or the Ctrl + Alt + C shortcut).

How do I resize without losing quality Krita?

Re: Krita how to scale without losing quality.

just use the “box” filter when scaling. other programs may call this “nearest” or “point” filtering. it will not mix between pixel values at all when resizing.

How do I change the size of a layer in Krita?

to open image as a layer you can go to layer menu > import layer and browse the image. or just drag the image in the canvas , which will give you a context menu , click import as a new layer from that context menu. Layer -> Scale Layer to New Size.