Add the ability to view pdf documents without their margins and allow the user to focus on text content. Especially for LaTeX users who have very large margins. This feature is implemented in Okular.

For example, if I take the following pdf file:

We can see that he have to much margin:

And the goal is to show only the blue area witch is the only important area, and we will get a rendering like this:

For this feature, we can use the x key binding, because x isn’t used by another feature in Zathura and the X letter remember the scissor form ✂. Then, the x key will toggle the trimed and the no-trimed mode.