SVG Accessibility: Making Vectors Screen-Reader Friendly
Accessible SVG requires only a few attributes — here's the complete guide for both meaningful and decorative SVG.
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Decorative vs Meaningful SVG
The right approach depends on whether the SVG conveys information.
- Decorative SVG (icon alongside visible text): aria-hidden='true' — screen readers skip it
- Meaningful SVG (only graphic, no visible text): needs a text alternative
- Functional SVG (clickable button): needs role and label
- Never add aria-hidden to an SVG that is the only indicator of an action or status
Adding Accessible Labels to SVG
Three approaches for meaningful SVG.
- <title> element: <svg><title>Upload icon</title>...</svg> — the accessible name
- <desc> element: longer description for complex SVGs: <desc>A pie chart showing 65% market share</desc>
- aria-label: <svg aria-label='Upload icon'> — attribute-based alternative to <title>
- aria-labelledby: <svg aria-labelledby='svgTitle'><title id='svgTitle'>...</title>
- role='img' on the <svg> element: tells AT it's an image, not a group of elements
Accessible Interactive SVG
SVG used as a button or link needs additional ARIA.
- <svg role='img' aria-label='Close dialog'>: icon-only button SVG
- tabindex='0': makes SVG keyboard-focusable if used as an interactive element
- SVG in <button>: the button's own accessible name takes precedence — SVG should be aria-hidden
- keydown handler: add keyboard events (Enter/Space) if SVG is used without a native button element
Frequently Asked Questions
Do I need to add alt text to SVG like PNG images?
SVG doesn't have an alt attribute. Use aria-label or a <title> element inside the SVG for the text alternative. Or if the SVG is decorative, add aria-hidden='true'.
What's the difference between title and aria-label on SVG?
Both provide an accessible name. <title> is SVG-native and browsers may show it as a tooltip. aria-label overrides <title> if both are present. aria-label is more reliable across screen readers — use it for important SVGs.
Should icons next to text have alt text?
No — use aria-hidden='true' on the SVG icon when it's accompanied by visible text. The text label is the accessible description; the icon is decorative.
Does role='img' need to be on every SVG?
Use role='img' on SVGs that convey meaningful content (standalone graphics, infographics). Don't use it on decorative SVG (use aria-hidden instead) or on SVG used inside interactive elements (the element provides the role).
How do I make a data visualization chart SVG accessible?
Add <title> for a brief summary, <desc> for a detailed description, and provide a data table alternative. Complex charts benefit from a combination of ARIA and a visible text description.
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