ClickSub от Simon

ClickSub lets you translate subtitle words on the fly while watching videos. Just click a word in the subtitles — the video pauses and a tooltip shows the translation. Double-click to translate the full sentence.

How it works:
- Click a word in the subtitles to see its translation
- Double-click to translate the entire sentence
- Click the translated word to expand to a full sentence translation where each word is clickable
- Click any word in the sentence translation to see its reverse translation back to the source language
- Right-click the tooltip to copy the translation or the original text

Other features:
- Handles hyphenated words split across subtitle lines
- all languages supported via DeepL
- Video automatically pauses during translation and the tooltip dismisses when you resume
- Supported sites: YouTube, SVT Play

Setup: You need a free DeepL API key. Get one at https://www.deepl.com/en/your-account/keys — then open the extension popup and enter your key and preferred languages.