SVG Icons for Websites: Implementation Guide
Sharp, lightweight, accessible — SVG is the best format for website icons. Here's how to implement them correctly.
Why SVG Icons Beat Icon Fonts
Icon fonts (Font Awesome, Material Icons) were popular but have significant drawbacks. SVG icons are strictly better for almost all modern use cases.
| Criteria | SVG Icons | Icon Fonts |
|---|---|---|
| Rendering sharpness | Pixel-perfect at all sizes | Blurry on some systems |
| Color control | Multi-color, any color, CSS controllable | Single color only |
| Accessibility | Can include <title> and aria-label | Screen reader issues |
| File size | Load only what you use | Entire font loaded |
| Positioning | Exact, CSS box model | Baseline alignment quirks |
Three Ways to Use SVG Icons in HTML
Choose the method based on your needs for styling, caching, and maintenance.
- <img src='icon.svg'> — simplest, cached, but limited CSS styling
- <svg> inline HTML — full CSS and JavaScript control, no extra request, can't be cached separately
- CSS background-image: url('icon.svg') — for decorative icons in CSS
- SVG sprite + <use> — single sprite file, reuse icons anywhere with <use href='#icon-name'>
SVG Sprite System (Recommended for Icon Sets)
For websites using many icons, the SVG sprite system is most efficient. One HTTP request loads all icons; individual icons are referenced by ID.
- Create a sprite file: a single SVG with <symbol id='icon-home'> elements
- Include the sprite in HTML (or inject it with JavaScript)
- Reference icons: <svg><use href='#icon-home'></use></svg>
- Style with CSS: svg { width: 24px; height: 24px; fill: currentColor; }
- Use 'currentColor' fill to inherit text color automatically
SVG Icon Accessibility
Icons must be accessible to screen readers. Use these patterns depending on whether the icon is decorative or meaningful.
- Decorative icon: add aria-hidden='true' to hide from screen readers
- Meaningful icon (standalone): add <title>Description</title> inside the SVG
- Icon with adjacent text: use aria-hidden='true' on the SVG, the text provides context
- Interactive icon button: add aria-label to the <button> wrapper
Converting Custom Icons to SVG
If your design uses custom icons (from Figma, hand-drawn, or raster sources), convert them to SVG with our tool. Upload the PNG, use the 'Icon' preset for clean flat-color output, then optimize with SVGO before adding to your project.
Frequently Asked Questions
Should I use SVG sprites or inline SVG?
Use SVG sprites for icon sets used site-wide — one cached file, no inline bloat. Use inline SVG for unique, animated, or CSS-controlled graphics that appear once.
How do I make SVG icons change color on hover?
Set fill: currentColor on the SVG, then control color with CSS: .icon:hover { color: blue; }. The SVG inherits the color value.
What size should SVG icons be?
Define icons with a viewBox (e.g., '0 0 24 24') and set width/height in CSS. This allows resizing without touching the SVG file.
Are SVG icons supported in all browsers?
Yes. SVG has full support in all modern browsers. IE11 supports inline SVG but not all CSS properties — polyfills are available if IE support is needed.
Can I use Font Awesome SVG icons?
Yes. Font Awesome offers an SVG + JavaScript version (and individual SVG downloads) that works independently of the icon font.
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