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content</a>. |
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<p>The <code title=attr-img-src><a href="#src">src</a></code> attribute |
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must be present, and must contain a <a href="#valid">valid URL</a>. |
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<p class=big-issue>Should we restrict the URL to pointing to an image? |
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What's an image? Is PDF an image? (Safari supports PDFs in <img> |
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elements.) How about SVG? (Opera supports those). WMFs? XPMs? HTML? |
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must be present, and must contain a <a href="#valid">valid URL</a> |
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referencing a non-interactive, optionally animated, image resource that is |
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neither paged nor scripted. |
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<p class=note>Images can thus be static bitmaps (e.g. PNGs, GIFs, JPEGs), |
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single-page vector documents (single-page PDFs, XML files with an SVG root |
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element), animated bitmaps (APNGs, animated GIFs), animated vector |
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graphics (XML files with an SVG root element that use declarative SMIL |
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animation), and so forth. However, this also precludes SVG files with |
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script, multipage PDF files, interactive MNG files, HTML documents, plain |
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text documents, and so forth. |
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<p>The requirements on the <code title=attr-img-alt><a |
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href="#alt0">alt</a></code> attribute's value are described <a |
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title="">official type</var>. |
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<p>User agents must not support non-image resources with the <code><a |
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href="#img">img</a></code> element. User agents must not run executable |
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code (e.g. scripts) embedded in the image resource. |
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href="#img">img</a></code> element (e.g. XML files whose root element is |
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an HTML element). User agents must not run executable code (e.g. scripts) |
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embedded in the image resource. User agents must only display the first |
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page of a multipage resource (e.g. a PDF file). User agents must not allow |
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the resource to act in an interactive fashion, but should honour any |
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animation in the resource. |
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<p>This specification does not specify which image types are to be |
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supported. |
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<hr> |
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