Best Text Diff Tools 2026 — Compare Code and Documents

Whether you're comparing code versions or contract drafts, diff tools save hours.

1. spunk.codes Diff Checker

Our free diff checker shows side-by-side comparison with color-coded additions (green) and removals (red). Line-by-line or word-by-word modes.

Use Cases

• Compare code before and after changes
• Find changes in legal documents
• Check content updates on websites
• Verify data migrations
• Review pull requests