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JSON Viewer JSON Sort JSON Escaper JSON Editor

Transform

JSON Flatten JSON Patch

JSON Merge Patch

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JSON Schema Validator JSON Schema Generator

JSONPath Tester JSON Size Analyzer JSON Linter JMESPath Tester

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Changelog Attributions

© 2026 Daniel Chen

PrismKit

JSON

JSON Diff

JSON Diff

Runs in your browserLocal

Compare two JSON documents and see added, removed, and changed values highlighted side by side.

JSON Merge Patch

Apply or generate an RFC 7396 merge patch, or deep-merge several JSON documents with a choice of array strategy.

JSON Schema Validator

Validate a JSON document against a JSON Schema (draft 2020-12 core keywords) and list every error with its instance and schema path.