How to reduce the width of the gutter in the editor

Question

How can I reduce the width of the bar (gutter) in the editor when opening any file?

Answer

The gutter appears wide because it accommodates gutter icons and the folding arrow, which is only visible when you move the mouse over it by default.

To reduce the width of the gutter, you can follow these steps:

1. Open Settings | Editor | General | Gutter Icons.
2. Disable the option "Show gutter icons".

This action will significantly reduce the width. However, note that gutter icons provide useful functionality, so disabling them is generally not recommended.