How do I crop by values?

[rich2005]

The problem with not using the on-canvas crop is determining what the result looks like
Just to show I am not a complete dinosaur, you can use GEGL - Filters -> Generic -> GEGL graph and make a preset such as

Code:

crop
x=1
y=1
width=100
height=100

Works like this: https://i.imgur.com/mo1VzhH.mp4