QA
Text and Code Diff
Paste original and changed text to generate a bounded unified line comparison.
How this tool works
Line diff is useful for configuration, logs, documentation, and code where textual edits matter. This complements the existing JSON/YAML structural diff, which compares parsed values.
Large files are capped to avoid quadratic work. The report does not understand syntax or business meaning.
Examples
- Compare two configuration drafts.
- Ignore whitespace-only changes.
- Export a unified review snippet.
Common use cases
Review two configuration drafts before deployment.
Worked synthetic example
Valid example
Old: timeout=5 | New: timeout=10
Expected: One removed line and one added line. The diff shows a textual edit, without assessing operational impact.
Failure or warning to recognize
Invalid/failure example
Comparing a 100,000-line file in a quadratic browser diff.
Expected: Input above the configured size limit reports a limit error instead of attempting an expensive comparison.
Related guides
Official references
Related tools
JSON / YAML Deep DiffCompare parsed JSON or YAML structures rather than line-oriented text.OpenAPI Diff and Breaking Change AnalyzerCompare old and new OpenAPI 3.x contracts with conservative compatibility classifications.SQL FormatterFormat SQL locally with selected dialect and keyword casing, without execution.