a vim plugin around the backend code of unicodeit.net
Follow the installation instructions of your favourite vim plugin manager. Make sure git submodules are enabled and checked out as well.
Check the contents of the plugin/unicodeit.vim file. By default, ^U u is registered in visual mode (including visual line mode and visual block mode). It converts latex code in the highlighted region to unicode.
1 This is some file content
2 Here I write \alpha \neq \psi.
When highlighting line 2 with shift + V and triggering the plugin ^U u this turns into
1 This is some file content
2 Here I write α ≠ ψ.