Tomato Countdown

or a a the frequently ends. save users click, used a durations presets, and timer 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。 as a start when countdown to for lightweight browser with timer it browser. allows notification one notification page receive open countdown