Auto-caption your video — AI subtitles, free, no sign-up

Add subtitles to any video, automatically

Drop in an MP4, MOV or WebM and eziclip generates accurate, perfectly timed subtitles for it in seconds — no typing them out, no nudging each line into sync by hand. The speech recognition runs right in your browser, transcribes what's said with word-level timing, and lays the captions over your clip so you can read, edit and restyle every word before you export.

It's a full auto subtitle generator and caption editor in one page: transcribe, fix the text, pick a style, burn it in, done. Whether you're captioning a TikTok, an Instagram Reel, a YouTube Short, a podcast clip or a plain talking-head video, the flow is the same and takes about a minute.

Why captions matter for short-form video

Most short-form video is watched on mute. People scroll feeds in public, on a commute, in bed — and a clip without captions gets skipped before the first sentence lands. Subtitles keep viewers watching: they make your hook readable in the first second and reinforce every line even with the sound off.

They also widen your reach. Captioned videos are accessible to deaf and hard-of-hearing viewers and to anyone watching in a second language, and on TikTok, Reels and Shorts on-screen captions have quietly become the format's default. Adding subtitles is one of the simplest ways to make a video perform better.

AI subtitles with word-perfect timing

The transcription is handled by an on-device AI speech model that detects the spoken language on its own and returns every word with its own start and end time. That word-level timing lets words highlight one at a time, karaoke-style, exactly in sync with the audio instead of whole lines appearing at once.

The model covers around 100 languages, including English, Spanish, Portuguese, French, German, Italian, Russian, Ukrainian, Polish, Dutch, Turkish, Arabic, Hindi, Japanese, Korean and Chinese. Speech recognition is never flawless, so every word lands in an editable transcript: click any word to fix a name, a spelling or a piece of slang and the caption updates instantly. The final text is always yours to correct.

Your video never leaves your device

Everything here happens on your own computer. When you drop in a file it is decoded, transcribed and rendered in your browser — there is no upload, no server crunching your footage, and nothing for any model to keep or train on. That's a real guarantee rather than a policy line: the video simply has nowhere else to go.

It also means you can caption confidential or unreleased client work without it touching someone else's cloud. The AI models download to your device once and then run locally.

Caption styles built for short-form

Four animated presets cover the looks creators actually use: Dynamic drops in one bold word at a time with a pop, Karaoke highlights each word as it's spoken, Highlighted puts the active word in a coloured box, and Minimal keeps it clean and out of the way.

From there everything is adjustable — the typeface and its weight, the size, the position on screen with a fine vertical nudge, the text and highlight colours, the outline, the drop shadow, and how many words show at once. You can match a brand palette or keep it plain, all without leaving the editor.

Burn them in, or download SRT and VTT

When the captions look right, there are two ways out. Burn them straight into the video and export an MP4 — either compressed for fast sharing or at your source quality — so the captions are baked into the frames and play anywhere. Or download just the subtitles as a standard .srt or .vtt file to upload alongside your video on YouTube or reuse in another editor. You can fine-tune the timing of any line first, and there's no watermark on anything you make.

Free, with no catch

eziclip is free for every creator — no watermark, no sign-up, no account, and no paywall waiting at the export step. Every caption style, every language and every export is open to everyone. If the tool saves you time and you feel like chipping in, there's a button for it, but it's never required. That's the whole deal: a genuinely free, private subtitle generator that runs in your browser.