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Accessible SVGs

• Think you know SVGs? This article is worth a read – you just might learn something.
• SVGs have an implicit WAI-ARIA role of “graphics-document“. You should only change this if the SVG only contains an image; an attribute of role="img" or role="graphics-symbol" would be appropriate.
• Hide decorative SVGs from screen readers using aria-hidden="true" – not role="presentation", as this doesn’t hide the contents of the SVG from screen readers.
• SVGs can have a <title> attribute which acts like an alt attribute on a normal image. It has to be the first child element within the <svg>. There is also an optional <desc> element which can follow this, and should be used to present more detailed textual information. Browser support for both of these is good but not 100%; aria-label can be added for wider support.

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