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    CSS Theme Previewer

    Edit your CSS theme and see live previews of shadcn/ui components with your custom styles.

    Share:
    Live Preview
    Valid CSS — 39 variables detected, light theme, dark theme
    About CSS Theme Previewer

    This tool helps you visualize how your CSS theme will look on real UI components. Paste your globals.css with CSS variables and instantly see the results on buttons, cards, inputs, and more. Perfect for designing shadcn/ui themes or any CSS variable-based design system.

    How It Works

    The previewer parses your CSS variables and applies them to sample components in an isolated preview. It supports these variable names:

    --color-primary, --color-secondary
    --color-background, --color-foreground
    --color-muted, --color-accent
    --color-destructive, --color-border
    --radius

    Features

    Syntax Highlighting

    Edit CSS with full syntax highlighting and auto-completion

    Live Preview

    See your theme applied to real UI components instantly

    Light/Dark Mode

    Toggle between light and dark themes to test both

    Component Showcase

    Preview buttons, cards, inputs, badges, and more

    Frequently Asked Questions

    How do I preview my theme?

    Paste your CSS variables (from :root or CSS file) and see how they affect shadcn/ui components in real-time.

    What components are included?

    Buttons, cards, inputs, selects, dialogs, and more - all major shadcn/ui components for testing.

    Can I copy the theme code?

    Yes! Copy the theme configuration to use in your project. Supports Tailwind CSS and CSS variables.

    What CSS variables are supported?

    All standard shadcn/ui theme variables: background, foreground, primary, secondary, accent, muted, destructive, borders, and more.

    Does this work with Tailwind CSS?

    Yes! The tool shows how your theme maps to Tailwind CSS colors and CSS variables for shadcn/ui.

    Privacy First

    All CSS processing happens in your browser. Your theme code never leaves your device or gets uploaded to any server.

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