Now available on Chrome, iOS & Android

YouTube subtitles,
any language

Paste a YouTube link. Pick your language. Watch with perfectly synced, auto-generated subtitles — on Chrome, iOS, or Android.

Download FreeSee how it works
KO
안녕하세요, 오늘 영상에서는...
How it works

Three steps. That's it.

No complex setup. No accounts required. Just paste, pick, and play.

Paste a YouTube link

Drop any YouTube URL or search for a video directly inside the app

Choose your language

Select from 15+ languages including Korean, Japanese, Chinese, Spanish, and more

Watch with subtitles

Perfectly synced translated subtitles appear over the video in real-time

Features

Built for how you actually watch

Every detail is designed around a seamless subtitle experience across all your devices.

Auto-Generated Subtitles

AI transcribes and translates any YouTube video's audio into your chosen language automatically.

15+ Languages

Korean, English, Japanese, Chinese, Spanish, French, German, and many more supported out of the box.

Built-in Player

Watch on mobile with our native video player. Subtitles overlay directly on the video with frame-perfect sync.

Live Progress Tracking

Watch your translation job progress through each stage — from downloading to transcribing to completion.

Chrome Extension

Subtitle overlay directly on YouTube's own player. No app switching needed — it just works in your browser.

Share from YouTube

Tap "Share" in the YouTube app and select RootblySub. Your link is ready to translate instantly.

Recently translated

Fresh off the queue

See what other people are translating right now. Click any video to open its subtitles.

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Salve Al Rey Capítulo 01العربية
도배가 왜 기술직인지 알게 됐습니다,,, 💪🫨ㅣ도배사ㅣ워크맨ㅣ이준ㅣBOYNEXTDOOR 운학한국어, Tiếng Việt
First Lady: Full Episode 46 (Stream Together)English
The Best Tech Modpacks To Play With Friends (2026)日本語
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Browse all videos
Languages

Speak the world's languages

15 languages and growing. Watch content from anywhere, understood everywhere.

Korean한국어
English
Japanese日本語
Chinese (Simplified)简体中文
SpanishEspañol
FrenchFrançais
GermanDeutsch
PortuguesePortuguês
Korean한국어
English
Japanese日本語
Chinese (Simplified)简体中文
SpanishEspañol
FrenchFrançais
GermanDeutsch
PortuguesePortuguês
RussianРусский
Arabicالعربية
Hindiहिन्दी
IndonesianBahasa
Thaiไทย
VietnameseTiếng Việt
Chinese (Traditional)繁體中文
RussianРусский
Arabicالعربية
Hindiहिन्दी
IndonesianBahasa
Thaiไทย
VietnameseTiếng Việt
Chinese (Traditional)繁體中文

15 languages supported — with more on the way

Get started

Available everywhere you watch

Free to start. No credit card required. Guest mode lets you try before signing up.

Chrome Extension

Overlay subtitles directly on YouTube

iOS App

Built-in player with subtitle overlay

Android App

Share from YouTube, translate, watch