Help

Nova Diff is a free, browser-based diff checker. It compares two texts by line, word, or character, and also supports JSON diffs that format the documents before comparing them.

How to use it

Type or paste your text into the “Original” and “Changed” fields. The differences are computed automatically, with additions highlighted in green and deletions in red. You can switch the comparison unit and toggle options such as ignoring case, whitespace, or key order.

Your text is never sent to a server — the diff is computed entirely in your browser.