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browserux-theme-switcher

v1.1.2

Published

Lightweight and customizable Web Component for theme toggling (light/dark), with i18n, accessibility, and full framework compatibility.

Vulnerabilities

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Links

Git

Maintainers

effeiloeffeilo

Keywords

web componenttheme switcherdark modelight modecustom elementi18naccessibilityreactvueangulardesign systemshadow dom

Readme

EN | FR

BrowserUX Theme Switcher

A modern solution to offer a light/dark theme selector and enhance the user experience across all your web interfaces.

BrowserUX Theme Switcher is a lightweight, accessible, and customizable Web Component designed to easily add a theme switcher button to any website or application. It automatically detects the system theme, remembers the user's preference, and applies the correct theme.

npm version unpkg

Features

  • 🎚 Toggles data-theme="light" / "dark" on <html> or a custom target element
  • 💾 Persists user preference in localStorage
  • 🕶 Detects system preference via prefers-color-scheme on first load
  • 📢 Dispatches a theme-change custom event on every theme change
  • 🧠 Dynamic ARIA labels, multilingual, auto-detected or customizable
  • 🌐 Built-in i18n for 9 languages (en, fr, es, de, ja, ru, pt, it, nl)
  • 🖼 Automatic image swapping via filename convention or explicit data-src-* attributes
  • 🎨 Fully customizable via CSS custom properties (--bux-switch-*)
  • 🧩 Optional Shadow DOM, disable with no-shadow

Installation

npm install browserux-theme-switcher

Or via CDN:

<script type="module" src="https://unpkg.com/browserux-theme-switcher/dist/browserux-theme-switcher.esm.js"></script>

Usage

import 'browserux-theme-switcher';
<browserux-theme-switcher></browserux-theme-switcher>

Parameters

| Parameter | Type | Description | |---|---|---| | target | Attribute | CSS selector for the element that receives data-theme | | lang | Attribute | Language code for built-in ARIA labels | | data-label-light | Attribute | Custom ARIA label for activating light mode | | data-label-dark | Attribute | Custom ARIA label for activating dark mode | | no-shadow | Attribute | Disable Shadow DOM encapsulation | | style | Attribute | CSS custom properties for visual customization | | theme-change | Event | Fired on every theme change, e.detail.theme is "light" or "dark" | | light-icon | Slot | Icon displayed on the light side of the toggle | | dark-icon | Slot | Icon displayed on the dark side of the toggle |

Documentation

For detailed documentation, see docs/index.md.

Guide

Reference

  • Attributes : target, lang, data-label-*, no-shadow, style
  • Events : theme-change event with payload and use cases
  • Slots : light-icon, dark-icon named slots
  • Utilities : updateImagesByTheme, updateThemeImages

Additional reference

  • Compatibility : browser support, framework compatibility, build formats
  • Contributing : report a bug, suggest an improvement, submit a PR

License

MIT © 2026 Effeilo