What this tool is for
Code Diff Checker compares two snippets and marks lines as unchanged, removed, or added.
When to use it
Use it for quick paste-based reviews, support messages, config changes, and small code examples.
What the result means
The result uses a compact unified-diff style with space, minus, and plus prefixes.
Use notes
- This is a simple line comparison.
- It does not detect moved lines or syntax-aware changes.
- Use Git for authoritative repository diffs.
Privacy and limits
Everything runs in your browser tab. Avoid pasting production secrets, private tokens, customer data, or proprietary code into any online page unless your team policy allows it.