UD5 Toolkit
Auto Dark Mode Scheduler – Online Custom Time Switch
Set times to automatically switch light/dark theme on any website using a bookmarklet or live demo.
Tag: Dark Mode Toggle & Preview
6+ toolsCSS Variable Theme Builder - Online Light & Dark Mode
Define a set of colors for light and dark themes. Get the CSS custom properties snippet. Toggle live.
Dark Mode Toggle Demo - Online Respect System Preference
Implement a dark/light theme toggle that respects prefers‑color‑scheme. Copy the complete JavaScript and CSS.
prefers‑color‑scheme Live Preview - Online Dark/Light
Toggle between light and dark mode for a demo page. See how to use the media query. Copy the pattern.
color‑scheme Meta Generator - Online Dark/Light Opt‑in
Generate the <meta name='color‑scheme'> tag and CSS property to enable native dark/light rendering. Quick copy.
CSS Variable Theme Switcher - Online Dark/Light Generator
Design a light and dark theme by picking colors for backgrounds, text, and links. Get the CSS for both themes. Local.