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CSS Checkerboard Pattern - Online Background Generator

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CSS Checkerboard Pattern Generator

Generate pure CSS checkerboard backgrounds instantly. Customize colors, size, and angle — copy the code and use it anywhere.

Color A #333333
Color B #FFFFFF
10px 200px

Each cell = 20px Ă— 20px

0° 90° 180°
Live Preview Pattern: 40px
Also see:
rounded shapes
Generated CSS Code
.checkerboard { background-color: #ffffff; background-image: linear-gradient(45deg, #333333 25%, transparent 25%, transparent 75%, #333333 75%, #333333), linear-gradient(45deg, #333333 25%, transparent 25%, transparent 75%, #333333 75%, #333333); background-size: 40px 40px; background-position: 0 0, 20px 20px; }

Frequently Asked Questions

What is a CSS checkerboard pattern?

A CSS checkerboard pattern is a pure-CSS background effect that creates an alternating two-color grid — resembling a chessboard. It uses linear-gradient layered with precise background-size and background-position values, requiring no images or external assets. This makes it lightweight, resolution-independent, and fully customizable.

How does this generator work?

This tool layers two identical linear-gradient patterns offset by half the pattern size. By overlapping them strategically, the gradients create perfect alternating squares. The generator calculates the correct angles, positions, and sizes based on your inputs, producing clean, production-ready CSS code instantly.

Is the checkerboard pattern responsive?

Yes — since the pattern is defined in fixed pixel units (px), it remains crisp at any screen resolution. For truly responsive designs, you can replace pixel values with relative units like rem or vw in the generated code. The pattern tiles seamlessly regardless of container size.

Which browsers support CSS checkerboard patterns?

All modern browsers support the CSS features used: Chrome, Firefox, Safari, Edge, and Opera. The linear-gradient function has been supported since IE10. For IE9 and earlier, a solid fallback background-color is recommended. Mobile browsers including iOS Safari and Android Chrome fully support this technique.

What are common use cases for checkerboard backgrounds?

Checkerboard patterns are widely used in: image editors (to indicate transparency), design tools (preview backgrounds), data tables (alternating row backgrounds), game UIs (board games), website hero sections (decorative patterns), and developer tools (code diff viewers). They're also popular in retro and pixel-art themed designs.

Can I animate a CSS checkerboard pattern?

Yes, you can animate the pattern using CSS @keyframes to change background-position or background-size over time. This creates scrolling or pulsing effects. For color transitions, use CSS custom properties (variables) and update them via JavaScript or hover states. The pattern remains performant because it's purely CSS-based with no repaints needed.

How do I make the checkerboard semi-transparent?

You can use rgba() or hsla() color values with an alpha channel for Color A. For example: rgba(0,0,0,0.5) creates a 50% opaque black checker over Color B. This is especially useful when overlaying the pattern on top of other content or images using pseudo-elements or multiple backgrounds.

Can I export the checkerboard as an image?

Yes — click the "Download PNG" button to export your current checkerboard pattern as a PNG image. The generator renders the pattern to a canvas element at 512×512 pixels. This is useful for mockups, presentations, or situations where CSS cannot be used directly. The exported image includes any rotation angle you've set.

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