JSON patch builder

Generate an RFC 6902 patch that changes the original JSON into the updated JSON.

On your device · No account

Privacy details

JSON patch builder processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Original JSON

More options

Updated JSON

Your result

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-19

Using JSON patch builder

JSON patch builder compares object properties, emits add, remove and replace operations, and escapes JSON Pointer paths. It handles root values and arrays without guessing a record identity.

Next: JSON formatter

A worked example

Changing active from true to false creates a replace operation at /active. An unchanged document produces an empty patch.

Before you use the result

Arrays are replaced as a whole. This is a deterministic patch, not necessarily the smallest possible edit script. Apply it only to the original document it was generated from.

Cite this page

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ToolOctopus. “JSON patch builder.” Updated 2026-09-19. https://tooloctopus.com/json-patch-builder.

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