Yes—you can use an SVG as a website favicon. Add a rel="icon" link in the page’s <head>; for a scalable SVG icon, the standards-backed pattern is type="image/svg+xml" with sizes="any". SVG is also useful for interface graphics because it describes shapes in a scalable coordinate system. But one SVG declaration does not guarantee the same icon on every browser or device surface: provide other formats or a separate touch icon when your requirements call for them, and test the places your site needs to support.
What SVG is—and how it differs from a favicon
SVG, or Scalable Vector Graphics, is a graphics format based on shapes described in a coordinate system. The <svg> element establishes a viewport and coordinate system; it can form a complete SVG document or mark an embedded fragment within a page. Because the artwork is defined as vector content rather than a fixed grid of pixels, it can be scaled for different display sizes. See MDN’s SVG element reference.
A favicon is not a file format. It is an icon a browser or device may use to represent a website in places such as browser tabs or other interface surfaces. An SVG can be one of the files declared as a favicon, just as raster formats such as PNG or ICO can be. Choose based on the surfaces you need to cover, not on the assumption that one format is universal.
How to declare an SVG favicon
Put this declaration in the page’s <head>, and make sure /favicon.svg resolves to the SVG file on your site:
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<link rel="icon" href="/favicon.svg" type="image/svg+xml" sizes="any">The HTML Standard uses this form for a scalable SVG icon. rel="icon" identifies the resource as an icon, type="image/svg+xml" identifies its format, and sizes="any" signals that the icon can scale to arbitrary sizes. Consult the HTML Standard’s link-type documentation.
Keep the SVG artwork legible at the small sizes where an icon may appear. A detailed illustration that looks good when enlarged can lose its shape when reduced. Check the actual icon at the sizes and on the surfaces that matter to your site.
When to offer additional icon files
A site can declare more than one icon. The HTML Standard shows separate PNG, ICO, and SVG declarations; browsers may consider attributes such as media, type, and sizes when choosing among rel="icon" links. The exact behavior is not identical across all browsers and mobile platforms, so do not assume that every client will choose the same file. The MDN reference for rel describes these selection hints.
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iOS has a distinct touch-icon case: it uses apple-touch-icon for Web Clips and startup placeholders rather than selecting icons in the same way as other mobile browsers. If those surfaces matter, declare and test the relevant touch icon separately. For any additional format or device-specific declaration, verify the behavior on your target browsers and devices instead of relying on a universal support assumption.
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First decide whether an icon is decorative or meaningful. The right markup depends on what the icon communicates and whether nearby text already communicates the same thing.
Decorative icon beside a visible label
If an icon adds no information beyond a visible text label, hide it from assistive technology and prevent it from becoming an unwanted focus stop:
<button type="button">
<svg aria-hidden="true" focusable="false" viewBox="0 0 24 24">
<!-- decorative artwork -->
</svg>
Save
</button>This follows the pattern shown by the W3C Design System’s SVG icon guidance. The visible word “Save” supplies the meaning; announcing the decorative drawing as well would add redundant content.
Graphic that conveys meaning
When the SVG itself carries information, use an appropriate accessible pattern for that context rather than hiding it as decorative. SVG’s <title> element can provide a short description for an SVG container or graphic. See MDN’s SVG <title> reference. Consider how the graphic is used and what information surrounding text or the interface already provides.
Links and other interactive SVG content
Shapes and text inside SVG that act as links need deliberately styled interaction states. Linked SVG shapes do not receive a distinct default appearance automatically, so make links discoverable and keep keyboard focus visible. MDN covers SVG linking and this styling concern in its SVG linking guide. Check the default, hover, and keyboard-focus states rather than relying on a browser to make the link obvious.
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A practical selection checklist
- Scalability: Use SVG when scalable vector artwork suits the icon; make sure the design remains recognizable at its intended display sizes.
- Target surface: Identify the browsers and device surfaces where the icon must appear. Do not infer a complete compatibility guarantee from the SVG declaration alone.
- Additional declarations: Decide whether your requirements call for PNG or ICO files, or a separate
apple-touch-iconfor iOS Web Clips or startup placeholders. - Accessibility: Hide an icon from assistive technology only when it is decorative and its meaning is otherwise available. Give meaningful graphics an appropriate accessible treatment.
- Interaction: If SVG content is clickable, provide visible link and keyboard-focus states.
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