UtilityEmpire

Diff and Merge Studio

Paste two versions of a text or JSON document, get a line-level unified diff, then merge and apply the changes. Everything runs locally in your browser — no data is ever sent over the network.

Paste two versions below to diff and merge — nothing leaves your browser.

Base (A)

Changed (B)

Unified diff

Merge / apply changes

Result appears here once both inputs have content.