Dual Subtitles for YouTube™ - Language Learning by hunhunseunghun

Watch YouTube with two subtitles at once: the original line and its translation, together on the video. Made for learning a language from the videos you already like.

Dual subtitles use YouTube's own captions and YouTube's own translation into 150+ languages. No API key, no account, no sign-up, no limits.

TWO SUBTITLES AT ONCE
• The original subtitle and a translation on the video at the same time (bilingual subtitles)
• Picks the language actually spoken, even when YouTube would show you another one
• Auto-generated captions are joined into whole sentences, and the translation follows the same lines
• Translate into any language YouTube offers; by default, the language you use YouTube in
• Original on top or below, three text sizes, background darkness and height you can set

LEARN WITH IT
• Hover the subtitle and the video pauses, so you can read
• Click any word: save it with its sentence, or look it up (Naver Dictionary for Korean speakers, Google Translate for everyone else)
• My words: every saved word keeps its sentence, translation and a link back to the exact moment; search it, and export to Anki or CSV
• Saved words are marked when they come up again in other videos
• Keys: A previous line · S repeat this line · D next line
• Pause after each line, and hide the translation until you hover it — try to understand first
• Copy a line with its translation

STAYS OUT OF THE WAY
• Turn captions off with YouTube's CC button and the dual subtitles go too
• Hidden during ads; keeps working in the miniplayer; leaves Shorts and live streams to YouTube
• If YouTube ever limits caption requests, its own captions keep working and dual subtitles come back by themselves

PRIVATE
• Runs on youtube.com only
• No data collection, no analytics, no ads; saved words stay in your browser
• One permission: storage (your settings and saved words)

Not affiliated with YouTube or Google. YouTube is a trademark of Google LLC.