Caption a video on a Chromebook, without installing anything

Chromebooks cannot run Premiere or CapCut desktop, which leaves most caption tutorials useless. Burncaps runs entirely inside Chrome, which is exactly what a Chromebook is best at. Free, unlimited, no watermark, and your video never leaves the device.

Caption a video free
  • No install
  • Nothing uploaded
  • No watermark
  • No limits

Live preview, rendered on this page by the same engine that burns your video.

Why this works on a Chromebook when most tools do not

The browser is the whole app

There is nothing to download from a store, no Linux container to enable and no Android app to sideload. You open a web page, drop your video in, and work.

Chrome has the video engine built in

Chrome includes WebCodecs, the browser feature that decodes and re-encodes video using your hardware. That is the same machinery a desktop editor uses, and Burncaps drives it directly.

Your file stays on the Chromebook

Nothing is uploaded, so a slow or capped connection does not matter after the one-time model download. School and work devices with restricted networks handle this fine.

The honest limits on lower-powered Chromebooks

Transcription runs on your own processor, so an entry-level Chromebook will be slower than a laptop with a dedicated graphics chip. A one-minute clip is comfortable; a long lecture recording will take a while. If your Chromebook is in tablet mode or very old, expect the export to be the slow part, and remember the SRT and VTT exports are near-instant on any machine.

Chromebook caption options compared

What mattersBurncapsTypical desktop editor
Runs on Chrome OSYes, it is a web pageNo, needs Windows or macOS
Install requiredNoneYes
PriceFree. Pro is £29 onceSubscription or licence fee
Your videoStays on your ChromebookOn disk, or uploaded for cloud tools
Animated word-by-word captions10 styles built inManual keyframing or a plugin

Questions, answered plainly

Do I need developer mode or Linux enabled?

No. Burncaps is an ordinary web page in Chrome. Nothing needs enabling, installing or unlocking, which also means it works on managed school and work Chromebooks.

Will it work on a school-managed Chromebook?

Usually yes, as long as burncaps.app is not blocked by the network filter. Everything happens locally after the one-time model download, so there is no upload for a filter to object to.

How long does a video take?

The AI model downloads once, about 80 MB, then is cached. After that a short clip transcribes in well under a minute on most Chromebooks. Export speed depends on your hardware.

Can I export a subtitle file instead?

Yes. SRT, VTT, ASS and plain text all export instantly and work on every Chromebook regardless of processor.

Is there really no watermark?

None. The free tier is unlimited videos at any length with no branding of ours on your export, permanently.