W3C Markup Validation Service

Related

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  Caffeine

  Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers

  คะแนน: จำนวนคะแนนรวมทั้งหมด: 2

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  EnvSwitcher

  Stay safe and switch seamlessly between development environments.

  คะแนน: จำนวนคะแนนรวมทั้งหมด: 0

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  Web Developer

  Adds a toolbar button with various web developer tools. The official port of the Web Developer extension for Firefox.

  คะแนน: จำนวนคะแนนรวมทั้งหมด: 126

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  JavaScript QR Code

  Make QR Codes in JavaScript

  คะแนน: จำนวนคะแนนรวมทั้งหมด: 5

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  Webmaster menu

  Adds new items to browser context menu that open various analyzes of browsed web pages and sites.

  คะแนน: จำนวนคะแนนรวมทั้งหมด: 4