SubTranslate by Simon

SubTranslate helps you translate video subtitles instantly while you watch. Click any subtitle word to pause the video and see its translation in a tooltip. Double-click to translate the full sentence. Triple-click to translate all visible subtitles at once.

Features:

• Click individual subtitle words for instant translation
• Double-click to translate the full sentence
• Triple-click to translate all visible subtitles at once
• Explore sentence translations with clickable words
• Click translated words to see reverse translations back to the source language
• Right-click subtitles to copy the text or look up a word on Wiktionary
• Correctly handles hyphenated words split across subtitle lines
• Automatically pauses playback during translation (configurable)
• Tooltip closes when playback resumes
• Works on YouTube, SVT Play, and svt.se
• Supports all languages available through DeepL

Appearance & customization:

• Adjustable subtitle font size and vertical position
• Customizable highlight color with presets and HSL color picker
• Per-site settings overrides — configure each site independently

Advanced options:

• Context history — include previous subtitles for more accurate translations
• Choice of DeepL translation model (high quality or fast)

Setup:
A DeepL API key is required. Get one from deepl.com/your-account/keys, then open the extension popup and enter your API key and preferred languages.