Is TWP - Translate [BETA] safe?

TWP - Translate sends visible page text to your chosen backend (Google, Bing, Yandex, or DeepL) when you translate a page or selection.

TWP is an open-source full-page and selected-text translator. When you click the toolbar button, use a hotkey, or pick text from the context menu, its content scripts collect the visible text from the page and forward it through the service worker to whichever backend you select. By default it does not translate automatically; that only happens for sites you explicitly add to its always-translate list, which starts empty.