Dubstack Dual Subtitles

Clean dual subtitles for Netflix and YouTube, with click-to-lookup for language learners.

Watch Netflix and YouTube with the language you're learning on top and a translation underneath. Dubstack keeps both subtitle lines together, even when YouTube auto-captions arrive in rolling chunks. Click a word or drag across a phrase to look it up without leaving the video. The player pauses while you read and continues when you close the panel. Choose your languages once, then adjust subtitle size, width, position, and whether the translation stays blurred until you hover. FREE - Dual subtitles on Netflix and YouTube - YouTube auto-translate when a video has one caption track - Word and phrase translation on supported Chrome language pairs - Auto-pause for lookups and Alt+R to replay the current line - Blur mode for testing your understanding before revealing the translation - Saved words with subtitle context, exportable to Anki or CSV - Subtitle size, width, and position controls PREMIUM - Short explanations of meaning, grammar, idioms, and tone in the current line - Translation fallback for language pairs unavailable on the device - Automatic activation after checkout, with payment-email recovery for another browser There are no ads or analytics. Settings, saved words, captions, and free lookups stay in Chrome. Before the first Premium lookup, Dubstack shows which subtitle text will be sent for an answer. Dubstack is independently built and is not affiliated with, endorsed by, or sponsored by Netflix or YouTube.