Validation
Schema Markup Validator
Inspect structured data and schema.org markup embedded in a page or pasted as code.
validator.schema.org THE WEB, WELL BOOKMARKED
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98 references, libraries and tools for designing, building and testing the web.
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Validation
JSONLint
Validate and format JSON documents to find syntax errors in configuration and data.
jsonlint.comJavaScript tools
Transform
Convert between common code and data formats with focused browser-based utilities.
transform.tools