This Google Chrome extension uses the Google Structured Data Testing Tool to validate your structured data markup and rich snippets. The Structured Data Testing Tool checks all metadata formats supported by the Google Structured Data Testing Tool including microdata, Schema, RDFa and JSON-LD.
Installed by 893 users. Rated 4.9 / 5 by 12 users.
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Why use this extension over other structured data validators and tools?
The main point of difference this SEO tool has over other extensions or bookmarklets is that you can get structured data information whether the webpage is publicly accessible, on staging or on a development environment. Many other tools don't work unless your webpages are publicly accessible.
Currently available only on Google Chrome, possibly coming to other good browsers in the future.