Violentmonkey provides userscripts support for Chromium-based Opera.
Violentmonkey for Opera Presto: https://github.com/gera2ld/Violentmonkey-oex
If you'd like to help with a new translation, please download _locales/en/messages.json and translate it into your own language. Then you may either send the new translation to me or make a pull request. Thanks in advance.
Author: Gerald <gera2ld@163.com>