Quickly change the picture

[Redner]

Is it possible to preset the resolution of the picture and then use hot keys to apply them to other pictures or photos?

[rich2005]

(07-16-2021, 04:07 PM)Redner Wrote: Is it possible to preset the resolution of the picture and then use hot keys to apply them to other pictures or photos?

Thanks for translating in English.

A Gimp image is horizontal pixels x vertical pixels and that is independent of "resolution" = pixels-per-inch (PPI) which is a printing property.

The resolution is set in Image -> Print Size and I do not know of a way to use a hot key to set that property. 
Use Image -> Print Size before exporting or saving an image to set the PPI.

Things to understand: 
Gimp works in pixels.
Example: If the open image is 300 PPI.
File -> Open as Layers a 72 PPI image.
Any resulting image is now 300 PPI.

Maybe you want a scaling shortcut example 72 PPI -> 300 PPI which is very different to changing image resolution.

Edit:
This a 72 ppi image. Scale to the equivalent 300 ppi image. Any scaling, up or down will degrade the image. As far as I know there is no way to assign a hot key. You need to make a script or plugin.