🖌️ 在线画板Online Drawing Board
简单好用的在线画板：画笔、橡皮擦、颜色、粗细、撤销、清空，支持触屏，可下载 PNG。A simple online drawing board with brush, eraser, colors, sizes, undo and clear; touch-friendly, save as PNG.
使用说明与常见问题How-to & FAQ
「在线画板」是什么？What is the Online Drawing Board?
简单好用的在线画板：画笔、橡皮擦、颜色、粗细、撤销、清空，支持触屏，可下载 PNG。A simple online drawing board with brush, eraser, colors, sizes, undo and clear; touch-friendly, save as PNG.
如何使用「在线画板」？How do I use the Online Drawing Board?
在「在线画板」中，按需设置「粗细」等选项，然后点击「撤销」、「清空」、「下载 PNG」按钮即可。In the Online Drawing Board: Set "Size", then click "Undo", "Clear", "Download PNG".
手机上能用吗？Does it work on mobile?
可以。「在线画板」支持触屏操作，在手机和平板浏览器中均可使用，无需安装 App。Yes. The Online Drawing Board supports touch input and works in mobile and tablet browsers without installing an app.
「在线画板」免费吗？需要注册吗？Is the Online Drawing Board free? Do I need an account?
「在线画板」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Online Drawing Board is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.