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This service has been provided to allow you to check the validity of your CSS against the W3C's validation service, along with a colour contrast test, and a test to ensure that relevant sizes are specified in relative units of measurement. If the CSS is specified by a URL, it will be loaded into the text area to offer an option to make changes for testing without having to re-upload.

The Colour Contrast Check Tool allows to specify a foreground and a background colour and determine if they provide enough of a contrast "when viewed by someone having color deficits or when viewed on a black and white screen"[W3C]. The tool will indicate that the colours pass the test if both the colour difference and the brightness difference exceed their threshold. It will indicate that it sort of passes if only one of the two values exceed their threshold. And finally, it'll fail to pass if neither value exceeds its threshold. The tool will also indicate if the colours pass the newer WCAG 2.0 contrast ratio formula. The WCAG 2.0 formula differentiates between text smaller than 18pt text larger than 18pt (or text that is bold and larger than 14pt). For AA compliance, text should have a ratio of at least 4.5:1 (larger text, at least 3:1). For AAA compliance, text should have a ratio of at least 7:1 (larger text, at least 4.5:1).

Récapitulatif des données stockées dans un compte Google

30 extremely useful development tools, templates, generators, and security suggestions

Palette de 4096 couleurs

CSS-Typoset Matrix and code generator - http://bit.ly/oUORR - generates font-size and line-height in px and em.

générateur de sprite CSS

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W3C QA Tools and miscellaneous from Karl Dubost on 2009-08-26 ([email protected] from August 2009)

The font viewer allows you to easily review and catalog all of your installed fonts.