Chickadeeruns entirely on your machineLocal · Open source · Free forever

Any page,
read aloud,
locally.

A browser extension that reads web pages in a natural voice. The speech model runs on your own computer, not a server. Nothing it reads is ever uploaded, and there is no account, no API key, and nothing to pay for.

0:00 / 0:44the page reads itself
fig. 1 — chickadee, listening
press listen. the page will read itself.

Every other text-to-speech extension sends the page you're reading to a server. Chickadee doesn't. It runs Kokoro, an eighty-two million parameter speech model, right here in the browser. The words you are hearing right now were made by that model, on this machine. It is open source, and it is free forever. The voice downloads once, about three hundred and ten megabytes, and then it works offline. Install it, open any article, and press Alt plus R.

fig. 2 — seeing it work

It highlights the page you’re already on.

Not a stripped-down reader view beside the article — the article itself, with the spoken sentence lit as it goes.

Chickadee reading an essay: the sentence currently being spoken is highlighted directly on the page
darioamodei.com/essay/machines-of-loving-grace

Local and private

The model executes in your browser via WebGPU. There is no server to send anything to, so there is nothing to leak.

Reads the real page

Sentences are highlighted on the page itself, not in a stripped-down reader pane. Right-click any word to start from there.

Works offline

One ~310 MB voice download on first use. After that it never touches the network again — on a plane, in a tunnel, forever.

Free forever

Open source, Apache-2.0 components, no subscription and no upsell. Kokoro-82M, ONNX Runtime and Transformers.js do the work.

Install it and press ⌥ R

Chrome, Edge or Arc · requires WebGPU

Add to Chrome — soon

Needs a WebGPU-capable browser and machine. Chickadee checks on first run and tells you plainly if yours can’t run it.