A YouTube subtitle translator that reads the whole scene.

Watch videos from anywhere in your own language, with the original line still on screen. Mono translates conversations, not isolated words.

Dual subtitles

Your language on the bottom. Theirs on top.

Reading both lines at once lets you follow the story without losing the voice — and quietly teaches you how things are really said.

Both lines, clearly separated Different sizes and colours for the original and the translation.
Keep the real voice No dubbing, no robotic audio — just the speaker, understood.
Learn without trying Your ear starts matching sounds to meaning, video after video.

Made for real viewing

Fast banter, nicknames and honorifics, kept natural.

Long thoughts that run across many subtitles stay in one piece.

Technical terms stay the same from the first minute to the last.

Dishes, places and street slang that make sense.

Calm, precise narration with names spelled the same way every time.

Jokes, sarcasm and timing that still land.

27 languages

Any of these, from any of these.

Professional Translation

Recommended

Reads the scene with Google Gemini through your own free key. Natural, consistent, written for people.

Instant

Runs right in Chrome with no key. Perfect when you just need the gist.

Learn English with YouTube

Watch with both lines, save the phrases that matter, then practise them with the real speaker's voice in Mono Workspace.

Watch with just enough help. Subtitles step back as you improve.

Recall the line before you see it, hear the real speaker again, then say it out loud.

Put the phrase into a sentence of your own, then jump back to the scene.

Add Mono to Chrome — every Pro feature is free for 3 days.