Greasy Fork is available in English.
Highlight text then press [ALT+X] to convert LaTeX commands to their unicode equivalent (ex. \pi → π)
Userscript for converting LaTeX commands for math symbols to their unicode equivalents (ex. \pi → π)
Highlight over a selection containing LaTeX commands and press ALT+X
to convert the selection to unicode.
Press ALT+X
while your caret is in a LaTeX shortcut to convert that command to unicode.