FreeToolsMax

Dark Mode Previewer

Instantly preview how your website, app, or content looks in dark mode. Toggle between light and dark themes to simulate user experience and identify visual or accessibility issues before going live.

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Dark Mode Previewer

Dark Mode

Color Scheme Presets

Dark Gray
Charcoal
GitHub Dark
Cool Gray
VS Code Dark
Pure Black

Custom Colors

Darkness Intensity

50%

Dark Mode CSS

How to Use

  1. Enter a website URL and click "Load" to preview it
  2. Choose a preset color scheme or customize your own colors
  3. Adjust the darkness intensity to your preference
  4. Toggle dark mode on/off to see the difference
  5. Copy the generated CSS to implement dark mode on your own site

Tips

  • Some websites may block being loaded in iframes due to security policies
  • For best results, test with websites that don't have built-in dark mode
  • The CSS output provides a good starting point for implementing dark mode
  • Adjust the intensity to make dark mode more or less aggressive

Key Features

Instant Theme Toggle

Switch between light and dark modes with a single click to simulate real user experience.

Live Content Preview

Paste HTML, CSS, or text to see exactly how it looks in dark mode.

Custom Styling Options

Apply your own styles to test color compatibility and layout integrity.

Contrast Testing

Visually detect readability and design flaws caused by insufficient contrast in dark mode.

Developer Friendly

Great for frontend developers, designers, and QA testers building dark mode-ready apps.

Frequently Asked Questions

Dark mode is a user interface design that uses dark colors as the primary background, helping reduce eye strain and save battery life on OLED devices.

Many users prefer dark mode. Testing helps ensure your text, images, and UI remain readable and visually appealing.

Yes, this tool allows you to preview custom HTML and CSS content in both dark and light modes.

It simulates the appearance of your content in dark mode, similar to how operating systems and browsers render it.

Absolutely! No signup or download is required.

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Tool Details
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