Toggle Switch Generator — Pure CSS Toggle Switches with Live Preview

Toggle Switch Generator is a free, browser-based tool that lets you build CSS toggle switches visually. Customize size, shape, colors, and transition speed, then copy production-ready HTML, CSS, or React code with one click. No sign-up, no install — just open and build.

The Problem

A CSS toggle switch looks simple until you sit down to build one from scratch. The pattern involves a hidden checkbox, a ::before pseudo-element for the knob, a :checked + span selector for the active state, and transition timing that feels right at 300ms but wrong at 500ms. Getting the knob translate distance right requires arithmetic: width - knob - 2 × padding. Miss it by a pixel and the knob clips the track.

input:checked + .slider::before {
  transform: translateX(28px); /* where does this number come from? */
}

That 28px is 60 - 24 - 4 - 4. Width minus knob minus both paddings. Every size change breaks it. The math is mechanical, repetitive, and error-prone — exactly the kind of work that should be automated.

How It Works

1. Size Control

Three presets cover the common use cases:

• Small — 44×24px, 16px knob, translateX(20px)
• Medium — 60×32px, 24px knob, translateX(28px)
• Large — 80×44px, 36px knob, translateX(36px)

Select a size and all dimensions update together. The translate distance recalculates automatically.

2. Shape Options

Three border-radius styles:

• Pill — border-radius: 9999px with a circular knob (border-radius: 50%) — the iOS-style default
• Rounded — border-radius: 8px with a rounded square knob
• Square — border-radius: 2px for flat, Material-style interfaces

Shape changes apply consistently to both the track and the knob.

3. Color Pickers

Three independent color controls:

• On Color — background of the track when checked
• Off Color — background when unchecked (typically a neutral gray)
• Knob Color — the circular handle (usually white, but override-able for dark themes)

Each color picker shows both a visual swatch and a hex input field. Type a hex value directly or use the color picker — both update instantly.

4. Transition Speed

Four options map to specific millisecond values:

• None — 0ms (instant)
• Fast — 150ms
• Normal — 300ms (recommended)
• Slow — 600ms

The live preview reflects the transition speed — click the toggle preview to feel the animation before copying the code.

5. Live Interactive Preview

Click the preview toggle to toggle it on and off. The animation plays in real time at the exact transition speed you configured. What you see is what your users will get.

6. Three Code Output Tabs

CSS tab — the complete stylesheet for both the toggle component and the HTML structure it expects. Includes focus-visible styles for keyboard accessibility:

input:focus-visible + .toggle-slider {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

HTML tab — the full markup plus the CSS embedded in a <style> tag, ready to paste into any plain HTML file.

React tab — a self-contained ToggleSwitch component using useState and inline styles. No external dependencies beyond React itself.

Key Features

• Live preview — click the toggle to see the exact animation before copying
• Three sizes — Small, Medium, Large with pre-calculated dimensions
• Three shapes — Pill, Rounded, Square
• Full color control — on/off/knob colors with hex picker
• Four transition speeds — None, Fast, Normal, Slow
• Three code formats — HTML+CSS, CSS-only, React/JSX
• Accessible output — hidden checkbox base + focus-visible outline in generated CSS
• Zero JavaScript required — the toggle works via :checked pseudo-class
• One-click copy — copy button for each output tab
• Reset to defaults — one-click reset without refreshing the page
• Fully client-side — nothing leaves your browser

Technical Implementation

Core Technologies

• Next.js with App Router
• TypeScript in strict mode
• Tailwind CSS for tool UI styling
• Framer Motion for page entrance animations
• shadcn/ui for tabs and button components
• Sonner for copy confirmation toasts

Architecture

The tool maintains a single Config state object containing all six settings. Every change triggers re-generation of three code strings — CSS, HTML, and React — using pure functions with no side effects.

interface Config {
  size: "sm" | "md" | "lg";
  shape: "pill" | "rounded" | "square";
  speed: "none" | "fast" | "normal" | "slow";
  onColor: string;
  offColor: string;
  knobColor: string;
  checked: boolean; // controls the preview state
}

The translate distance is calculated programmatically:

function getTranslateX(size: Size): number {
  const s = SIZES[size]; // { width, height, knob, pad }
  return s.width - s.knob - s.pad * 2;
}

This eliminates the hard-coded pixel arithmetic and makes all three size presets work correctly without manual calculation.

Use Cases

Form Fields

Toggle switches are the standard UI for binary settings — email notifications on/off, dark mode enabled/disabled, two-factor auth active/inactive. Generate a switch that matches your form's color scheme and size conventions, then drop in the code.

Settings Panels

SaaS dashboards and admin panels often have 10–20 toggles in a settings view. Having a consistent toggle component reduces visual noise. Generate once, copy the CSS as a shared component style.

Design-to-Code

A designer hands you a Figma mockup with a custom toggle that uses brand blue (#3b82f6) and a slightly rounded square shape instead of the default pill. Instead of hand-coding the dimensions and calculating the knob translate, configure the generator to match, copy the CSS, and move on.

Dark Theme Support

The Knob Color control lets you set a dark knob (e.g., #1f2937) for light-mode interfaces or a light knob for dark-mode ones. The off-state track color works the same way — set it to a dark #374151 for a dark theme.

Learning CSS Toggle Patterns

The :checked + sibling pattern is a foundational CSS technique. The generated code shows exactly how it works — the hidden checkbox, the ::before pseudo-element as the knob, the sibling combinator for the state change. Reading the output is a quick way to understand the pattern without searching Stack Overflow.

Accessibility

The generated toggle switch is fully accessible without any additional changes:

• Keyboard navigable — Tab to focus, Space to toggle
• Screen reader compatible — the underlying <input type="checkbox"> is announced as a checkbox by all major screen readers
• Focus indicator — focus-visible styles are included in the generated CSS using the on color
• ARIA not required — the semantic checkbox provides all necessary state information

Why Toggle Switch Generator?

vs. Hand-coding

• No arithmetic — translate distance calculated automatically
• Visual feedback — see the result before touching your codebase
• Three output formats — HTML, CSS, React in one tool

vs. Copy-pasting from CodePen

• Configurable — adjust colors and size without editing the CSS manually
• Accessible output — focus styles included by default
• Documented — the generated code is clean and readable

vs. UI Libraries (Radix, shadcn)

• Zero dependency — pure CSS and HTML, no package install
• Full visual control — not constrained by a library's design tokens
• Framework-agnostic — works in any stack, not just React

Results

Toggle Switch Generator removes the friction from building custom toggle switches:

• Under 30 seconds from open to copy-paste code
• Zero math errors — translate distance always correct
• Accessible by default — focus styles included without extra work
• Works in any project — HTML, CSS, or React output

Try it now: toggle-switch-generator.tools.jagodana.com