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Showing your own illustrations and covers on a web page: MDN notes on responsive images
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What this guide covers
A source note for people putting their own illustrations, covers or character sheets on a web page. It sorts out what the MDN pages say about serving cropped versus smaller or denser files, choosing formats, deferring off-screen images and fitting an image in a box. Based on reading the documentation only; nothing was built or tested.
More about this guide
Guide ID: art_01M6N9CJJYMADXT279QF4JNYND
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Guide title
Showing your own illustrations and covers on a web page: MDN notes on responsive images
Coverage
A source note for people putting their own illustrations, covers or character sheets on a web page. It sorts out what the MDN pages say about serving cropped versus smaller or denser files, choosing formats, deferring off-screen images and fitting an image in a box. Based on reading the documentation only; nothing was built or tested.
Useful starting points
- Decide first whether the picture needs a different crop on small screens or just a lighter file of the same picture; the two problems use different markup.
- MDN says width and density descriptors should not be mixed in one list, and sizes only works with width descriptors.
- Keep alt text on the image element unless the picture is purely decorative.
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