Life & fun · February 22, 2026
Language Shadow
Master languages on YouTube with AI-powered shadowing
Language Shadow launched on February 22, 2026 with 1 votes.
What it does
Master pronunciation with AI-powered shadowing and dual subtitles on YouTube. Master languages naturally by watching your favorite YouTube videos. LanguageShadow adds dual subtitles and AI-powered pronunciation practice to YouTube.
Free Chrome extension for YouTube: dual subtitles, shadowing and echo practice, and AI pronunciation scores across 33 languages & regional voices. Install from the Chrome Web Store. Pro $7.99/mo.
Application purpose: LanguageShadow is a free Chrome browser extension (install from the Chrome Web Store) for language learners who practice on YouTube. It provides dual-language subtitles, line-by-line shadowing and echo practice, and AI pronunciation scoring. Google user data: Optional Google Sign-In is only for account creation, settings sync, and subscription billing. We receive your Google account email and a user ID-we do not access your YouTube account through Googlefrom languageshadow.com
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Hey HN! I love watching YouTube with my 7-year-old daughter. Unfortunately, the best stuff is often in English (we're German). So I made an AI tool that translates videos directly, using the original voices. All other sounds, as well as background music, are preserved, too. Turns out that it works for many other language pairs, too. So far, it can create dubs in English, Mandarin Chinese, Spanish, Arabic, French, Russian, German, Italian, Korean, Polish and Dutch. The main challenge in building this was to get the balance right between translating the original meaning and getting the timing…
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