Tomato Countdown

A lightweight countdown timer for browser. It allows users to save frequently used durations as presets, start a timer with one click, and receive a browser notification or open a notification page when the countdown ends. 一款适用于浏览器的轻量级倒计时扩展。用户可以将常用时长保存为预设，一键启动倒计时，并在计时结束时接收浏览器通知或打开一个提示页面。