Compare two texts, JSON snippets or code blocks by line, word or character and highlight aligned additions and removals.
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Understand
An online diff checker aligns two versions and identifies shared, added and removed content at line, word or character level.
Main use case: Compare two snippets of text, code, JSON or documentation and identify insertions and deletions without losing alignment after a changed line.
FAQ
It aligns two versions and highlights content that was added, removed or left unchanged.
Line mode suits code and files, word mode makes prose edits readable and character mode reveals very small spelling or punctuation changes.
Yes. Format both JSON inputs with the same indentation first for a clearer line-by-line comparison.
Ignore horizontal whitespace when formatting changes are irrelevant. Keep it enabled for indentation-sensitive code or data.
The diff algorithm finds shared content and realigns it after insertions or deletions instead of comparing only identical line indexes.
No. It reads both inputs and renders a separate comparison locally in the browser.
OnSubmit tools run in the browser whenever the task can be processed locally. Avoid pasting production secrets, real banking details or personal data into public tools.