Text Diff

It runs a longest common subsequence comparison at word level. Words present in both versions stay plain, while words unique to either side get flagged as additions or removals. Adjacent changes of the same type merge into one highlight for readability.

Yes, the comparison runs completely in your browser and has zero external dependencies. Contracts, offer letters, and unreleased copy never leave your machine, which matters when the documents are confidential.

Green background means the text exists only in the Changed version, so it was added. Red background with strike-through means it exists only in the Original, so it was removed. Everything unhighlighted matches in both.

It does. Whitespace runs are treated as their own tokens, so a double space collapsed to a single space, or a moved line break, shows up in the output. That's useful for catching formatting drift in code snippets and config files.

Speed and privacy, mostly. There's nothing to open, no document conversion, and no upload step. You paste, you read the highlights, you're done, which suits quick checks like verifying an edit someone claims they never made.

Word level. It splits both inputs on whitespace boundaries and compares token by token, so a one-word edit inside a long paragraph highlights just that word, not the whole line. For code review style line diffs, a dedicated code tool fits better.

They count characters, not words. If the badge reads +12 added, twelve characters of new text appeared in the Changed version. It's a fast sanity check that the edit is as small, or as large, as you expected.

Yes. It's a text diff checker online that runs entirely in your browser, no account and no upload. Paste the Original and Changed versions and the highlighted diff appears live. As a text diff online it keeps your documents on your machine, which matters for contracts and unreleased copy.

Put the earlier one in the Original pane and the newer one in Changed, and the tool marks what moved. The diff recalculates as you type, so there's no compare button. You can compare two texts online this way for edits someone sent back without tracked changes.

Yes. The word level diff highlights every added and removed word, so the changes jump out instead of making you read both drafts line by line. Because you compare text online right here, there's nothing to install and no document conversion.

It runs a longest common subsequence comparison on the words in each pane. Words present in both versions stay plain, and words unique to one side get flagged, so small edits surface exactly. Adjacent changes of the same type merge into a single highlight to keep the result readable.

Yes. Words added in the Changed version show green, and words missing from it show red with a strike through. That combination surfaces both what was inserted and what was dropped, right down to a single missing word inside a long paragraph.