Text CompareNothing uploadedNo sign-upNo watermark

Compare Two Texts Line By Line

Spot every addition and removal between two versions. Both texts stay in your browser — useful when one of them is a contract.

Original

Changed

Differences

000 unchanged

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Diff Two Documents Without Uploading Either

Comparing drafts usually means pasting both into someone else's server. This runs the diff in your own browser, so neither version is transmitted.

Nothing Leaves The PageEverything happens in the browser. No request is made and nothing is stored.

Proper Line DiffUses longest common subsequence, so one inserted line does not mark everything after it as changed.

Contracts And DraftsCompare two versions of a document without handing either of them to a third party.

InstantRecomputes as you type, with a running count of additions and removals.

Ignore The NoiseOptionally ignore case and trailing whitespace so only real changes show.

Works OfflinePure JavaScript with no dependencies, so it keeps working with no connection.

Diff Two Documents Without Uploading Either