Generate sample JSON from JSON schema

There is a web based tool for generating JSON documents from JSON Schema documents at http://schematic-ipsum.herokuapp.com/ but I can't vouch for how well it works. It is included on the list of tools on the JSON Schema website.

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The down vote is most likely because asking for tool recomendations is considered off-topic. If you phrased your question like "How can I do X? My requirements are Y", then you avoid such downvotes (hopefully).