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Ecodesign
21
If the digital book declares to respect one or more standards or repositories, a link is offered to each of them
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25
Images have a useful and reasonable size and resolution.
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26
The included objects are provided with an appropriate fallback alternative.
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67
Style sheets are minified
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68
JavaScript files are minified
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86
ebook contains EPUB2 compatibilities when necessary
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87
Content files meet the weight limit of the oldest playback systems
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