护眼 20-20-20 preview

护眼 20-20-20

免费护眼休息提醒工具，遵循 20-20-20 法则。后台运行、浏览器通知，预防数字眼疲劳。立即试用！

相关指南

20-20-20法则：保护眼睛免受屏幕疲劳

相关 WebRecast 区域

WebRecast — Free Online Tools for Developers and Creators

Browser-based utilities for JSON, Base64, Regex, PDFs, images, SEO previews, text editing, colors, and calculators. No signup required.

JavaScript is required to run our interactive tools. Please enable it in your browser settings.