Existing HTML elements are extended and provided with China Phone Number List extra information, in this case for marking structured data. microdata HTML extensions are also used at Microdata. However, microdata is considered obsolete and no longer actively developed. Yet I still regularly come across websites, also from customers, who still work with China Phone Number List Microdata. That is why it is relevant to mention this option briefly here. Which format is best to use? Have you not yet implemented structured data? Then I recommend using JSON-LD. Thanks to supporting from Google, Bing (since July 2018), and Baidu, this format is now ready for three of China Phone Number List the big four search engines.
Only the Russian search China Phone Number List engine Yandex supports only Microdata and RDFa so far. If structured data has already been implemented using Microdata or RDFa, this can of course be maintained. However, regular checks should be made to see how long the search China Phone Number List engines will continue to support these two formats in the future. Some of the markups have additional requirements that you should consider during implementation. These specific guidelines are all in the 'Feature Guide' in the Google Developers Portal . Common mistakes China Phone Number List with structured data Due to the many different guidelines, certain mistakes can easily be made in the mark-up. Even Google's structured data testing tool isn't always helpful.
Some common mistakes are easy to China Phone Number List overlook, so here's a quick summary. Ratings or reviews (review snippet) While using (third-party) widgets to implement ratings or reviews is generally not a problem, there are a few points to China Phone Number List keep in mind. It is especially important that the layout of the review always refers to the main content of a page. A common mistake is that a general review of a webshop is China Phone Number List displayed page-wide via a widget, and can therefore also be seen on individual product pages.