JSON Patch is RFC 6902 standard format for describing JSON document modifications using add/remove/replace/move/copy/test atomic operations.

🔧 JSON Patch Tool

Q: How do I write JSON Pointer paths?

Paths start with /, /name for properties, /skills/0 for array elements, /a/b for nested. ~ escaped as ~0, / escaped as ~1.

Q: What is the test operation for?

Test verifies values match before patching; if mismatch, entire patch fails and rolls back, useful for conditional updates and concurrency control.

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Free online RFC 6902 JSON Patch editor - add / remove / replace / move / copy / test operations

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🛠️ Patch Operations

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📝 JSON Patch Text (RFC 6902)

FAQ

Q1: What is JSON Patch?

JSON Patch is a standard format defined in RFC 6902 for describing changes to JSON documents. It uses atomic operations (add, remove, replace, move, copy, test) to precisely describe modifications, commonly used for partial updates in REST APIs (PATCH requests) instead of sending the full document.

Q2: How do I write JSON Pointer paths?

JSON Patch uses RFC 6901 JSON Pointer for element location. Paths start with /: root object is "", /name points to the name property, /skills/0 points to the first array element, /a/b points to nested properties. Special characters: ~ is escaped as ~0, / is escaped as ~1.

Q3: What is the test operation for?

The test operation verifies that a value at the specified path equals the given value. If values don't match, the entire patch fails and rolls back. This is useful for conditional updates — ensuring values match expectations before modifying, preventing concurrent modification issues.