HTML and CSS Reference
In-Depth Information
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Incorrect rendering (one of the most significant drawbacks).
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Difficult and inefficient development cycle.
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Low level of accessibility.
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Low level of backward compatibility.
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Lost traffic, fewer visitors, and fewer sales. Because of the inconveniences and problems listed
earlier, web sites that are not standard-compliant have a higher risk of losing functionality,
popularity, and productivity.
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Additional bandwidth load and hosting cost. Numerous needless characters in the source
code increase both file size and complexity.
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More difficult updating and maintenance.
Benefits of Standard-Compliant Markup
Valid, standard-compliant markup has several advantages. Here are the most important ones:
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Search engine crawlers can index documents more adequately, and the content is basically
search engine optimized.
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Compared to those websites that violate standards, standard-compliant websites can be
downloaded faster.
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Well-structured markup provides faster rendering.
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Web documents that apply standards properly are rendered accurately in modern browsers.
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More users are accommodated, and they probably stay longer because of correct appearance
and layout.
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Lower development costs (only in case of well-qualified developers and carefully selected
software tools).
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Standard-compliant markup serves as the basis for website accessibility.
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Backward compatibility is ensured as browsers evolve.
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Optimal content lengths and file size (no unnecessary characters are listed in the source
code), as well as cost-optimal storage (potential for cheaper hosting).
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Standard-compliant markup is easier to maintain and update than the markup that
violates standards.
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Standard-compliant source codes become obsolete later, and upgrading is much easier when
new standards are introduced.
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Compatibility with current and future browsers is guaranteed (at least from the developers'
point of view).
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Inspire implementation and force web browsers to support standards progressively.
As you can see, the standard-compliant, clean code has many advantages over nonstandard code and that's why
standard compliance is vital in modern web design.
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Assuming that the web site has a decent design.
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