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🔑 JSON Key Case Converter

Convert JSON keys between 9 naming styles: camelCase, snake_case, PascalCase, kebab-case & more with depth control

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Free online JSON key case converter supporting 9 naming styles: camelCase, snake_case, PascalCase, kebab-case, CONSTANT_CASE, dot.case, path/case, Train-Case, and flatcase. Features all-level or top-level-only depth control. Smart acronym-aware word splitting (XMLParser → xml_parser, getHTTPSUrl → get_https_url), preserves leading/trailing underscores (_id, __typename), detects key collisions after conversion, and shows conversion statistics. Recursively processes nested objects and arrays. All processing runs locally in your browser — input data is not uploaded by the tool. Perfect for developers converting JSON between different API conventions (REST, GraphQL, gRPC).