How to Add Tooltips to SVG Elements
Add accessible, well-positioned tooltips to SVG shapes using native title elements or custom HTML-based tooltip overlays.
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Native SVG title Element Tooltips
The simplest tooltip approach nests a <title> element inside any SVG shape, which browsers display as a native tooltip on hover — no JavaScript or CSS required, though styling options are extremely limited.
- <title> inside a shape shows a native browser tooltip on hover
- Zero JavaScript or CSS needed for this basic approach
- Styling is not customizable — browser default tooltip only
Custom HTML Tooltip Overlays
For styled tooltips, use JavaScript to detect mouseenter/mouseleave on SVG elements, then show and position an absolutely-positioned HTML div near the cursor or shape, giving full control over tooltip appearance and content.
- mouseenter/mouseleave events trigger custom tooltip show/hide
- Position the HTML tooltip using getBoundingClientRect() coordinates
- Add role='tooltip' and aria-describedby for accessibility
Frequently Asked Questions
Why doesn't the native title tooltip work well for complex SVG diagrams?
Native tooltips have a fixed delay, can't be styled, and don't work well on touch devices. For data visualizations or interactive maps, a custom HTML tooltip overlay provides far more control.
How do I make SVG tooltips accessible to screen reader users?
Pair the visual tooltip with proper ARIA attributes like aria-describedby pointing to a hidden description element, ensuring the same information reaches assistive technology users.
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