Shortly thereafter the dig me paper.li of a webdev wannabe named Simon Manning picked up my links but not my comments, leaving the impression I was praising rather than panning the posers who put them forward. This will correct young Simon’s error:
What most of the seven checkers above basically do is render your web page source in “iFrames” with widths set to match the screen resolutions of popular tablet and mobile devices such as the slave-produced Apple iPad and iPhone. That might show you how your media queries, fluid grids and flexible images render within a given iframe in a given browser of a given version, but that is not the same as showing you how your web pages will render on actual iOS, Android or other mobile devices. Why? Because…
iFrames are not iPhones!
#RWD testers that ignore things like device and capability detection via user agent strings and DDRs (device description repositories)
I could go on, but do I need to?
Forget these charlatan checkers. If truly responsive web design is what you seek, then mobile friendly web 3.0 front-end development is what need. If you want broad accessibility, your web page source will have to pass meaningful validations.
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Miami web designer and Mobile Web developer Bruce Arnold's http://WebReDesignMiami.com (305-597-8340)