SVG Pattern Generator - Create Seamless Background Patterns Online
Generate custom seamless SVG background patterns with real-time preview. Adjust scale, rotation, opacity, spacing, and stroke — export as SVG, CSS, or PNG. 100% client-side, no data sent to server.
Frequently Asked Questions
What is an SVG Pattern Generator?
An SVG Pattern Generator is a tool that creates seamless, repeatable background patterns in SVG (Scalable Vector Graphics) format. These patterns are defined using the SVG <pattern> element, which allows a small graphical unit to tile infinitely across a surface. SVG patterns are widely used in web design for backgrounds, decorative textures, and visual accents because they are lightweight, scalable to any resolution, and fully customizable with code.
How do I use this SVG Pattern Generator?
1. Browse the pattern library and select a pattern type (e.g., Diagonal Lines, Hexagons, Dots). 2. Customize the foreground color (pattern elements) and background color. 3. Adjust Scale to control the density of the pattern. 4. Set the Rotation angle to orient the pattern. 5. Fine-tune Opacity, Spacing, and Stroke Width as needed. 6. Toggle between Fill and Outline style. 7. Copy the SVG code or CSS code, or download as SVG/PNG file.
What is the difference between SVG output and CSS output?
SVG output gives you a complete SVG file with <pattern> and <rect> elements. This is ideal for embedding directly in HTML, using in design tools (Figma, Illustrator), or referencing as an image file. CSS output gives you CSS background-image code with the pattern encoded as an inline SVG data URI. This is ideal for applying patterns directly in your stylesheets without any additional files. Both outputs produce identical visual results.
How do seamless/tileable patterns work?
All patterns in this generator are designed to be seamless by default. The SVG <pattern> element handles tiling automatically by repeating the pattern unit across the surface. The scale, spacing, and rotation parameters let you fine-tune the tiling appearance, but seamlessness is always maintained mathematically. The patternUnits='userSpaceOnUse' attribute ensures pixel-perfect alignment.
What makes SVG patterns better than image-based backgrounds?
SVG patterns offer several advantages over raster image backgrounds (PNG, JPEG): they scale perfectly to any resolution without pixelation, have extremely small file sizes (typically under 1KB), can be customized (colors, scale, rotation) via code without re-exporting, support transparency natively, render crisply on all screen densities (Retina, 4K), and can be inlined in CSS without additional HTTP requests.
Can I use the generated patterns in my web project?
Yes, the generated patterns can be used freely in any web project. You can embed the SVG code directly in HTML, use the CSS output in your stylesheets, or reference the downloaded SVG file. The patterns are generated from geometric primitives and are standards-compliant, working in all modern browsers (Chrome 90+, Firefox 88+, Safari 14+, Edge 90+).
Is this SVG Pattern Generator secure and private?
Yes. This tool runs 100% in your browser using client-side JavaScript. No design data, patterns, or color configurations are ever sent to any server. All pattern generation, SVG/CSS code creation, and PNG export happen locally on your device. This makes the tool safe for proprietary brand work, client projects, and confidential designs.
Code Examples
// Create SVG background patterns programmatically
function createDiagonalLinesPattern(options = {}) {
const {
size = 10,
strokeWidth = 1,
color = "#6366f1",
backgroundColor = "#ffffff",
opacity = 1,
rotation = 45,
} = options;
return `<svg xmlns="http://www.w3.org/2000/svg" width="${size}" height="${size}">
<rect width="${size}" height="${size}" fill="${backgroundColor}" />
<line x1="0" y1="${size}" x2="${size}" y2="0"
stroke="${color}" stroke-width="${strokeWidth}" opacity="${opacity}"
transform="rotate(${rotation} ${size / 2} ${size / 2})" />
</svg>`;
}
function createDotsPattern(options = {}) {
const {
size = 20,
dotRadius = 2,
color = "#6366f1",
backgroundColor = "#ffffff",
opacity = 1,
} = options;
return `<svg xmlns="http://www.w3.org/2000/svg" width="${size}" height="${size}">
<rect width="${size}" height="${size}" fill="${backgroundColor}" />
<circle cx="${size / 2}" cy="${size / 2}" r="${dotRadius}"
fill="${color}" opacity="${opacity}" />
</svg>`;
}
// Convert SVG pattern to CSS background
function svgToCssBackground(svgString) {
const encoded = encodeURIComponent(svgString)
.replace(/'/g, "%27")
.replace(/"/g, "%22");
return `url("data:image/svg+xml,${encoded}")`;
}
// Usage
const linesSvg = createDiagonalLinesPattern({ size: 12, strokeWidth: 1.5, color: "#3b82f6" });
const dotsSvg = createDotsPattern({ size: 16, dotRadius: 1.5, color: "#8b5cf6" });
const element = document.getElementById("my-element");
element.style.backgroundImage = svgToCssBackground(linesSvg);
element.style.backgroundRepeat = "repeat";
console.log("CSS:", svgToCssBackground(dotsSvg));