πŸ“ŠTextDiff
🧰Tools
2026-07-08Β·4 min read

Understanding Diff Formats: Unified vs Side-by-Side

Learn the different diff output formats and when to use each.

Diff Formats

Diff tools can display changes in several formats. Understanding them helps you choose the right view.

Side-by-Side

Shows both versions next to each other with differences highlighted. Best for:

    • Visual comparison

    • Non-technical users

    • Short documents

Unified Diff

Shows changes inline with + and - markers. Best for:

    • Code reviews (GitHub style)

    • Email or chat sharing

    • Patch files

Inline Diff

Shows one version with changes highlighted. Best for:

    • Presentations

    • Quick scans

    • Focused review

Reading Unified Diff

- Removed line (red)
+ Added line (green)
  Unchanged line (normal)

Lines starting with - are in the original but not the new version.
Lines starting with + are in the new version but not the original.
Lines starting with a space are unchanged.

Our Text Diff tool supports side-by-side view for easy reading.

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