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From web store

The extension is officially released to the web stores of Chrome, Edge and Firefox. You can install it directly from these links below.

From source code

You can also download the source code to install it manually.


This section only applies to chromium based browsers. If you want to install it for Safari, please read this page.


  • Git.
  • Node.js version 20 or higher.

Code download

git clone

Dependencies installation

npm install

Building & outputs

npm run build

After compilation, a file named timer-[version] will be output under the folder [PROJECT_ROOT]/market_packages/. Then you can unpack it and load into your browser.

For firefox, and other browsers not supporting Manifest V3, you need to use this command for compilation.

npm run build:firefox

Also, a file named timer-[version] will be output.

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