Today we are releasing SDO-Check, our semantic data testing tool!

SDO-Check is a free to use web-tool that enables the fast and simple verification of annotations based on the vocabulary.


introduction – what does it do? what is its focus? – who made it? – how does it work? – features and limitations- future features /changelog – difference to GSDTT


handles dynamically loaded structured data markup

fully aligned with

to test code snippets or a URL of web page

test returns errors with up to three different severities

faster than rich snipper test of google

not “branded” like GSDTT – we are compliant to the vocab