🔍 Diff Checker & Text Compare
Compare two text files, code snippets, or documents side-by-side. Highlight added, removed, and modified lines with instant visual diff. 100% private.
Free No Signup Required Browser-Based
+6 additions-4 deletions0 matching lines
| 1 | function calculateTotal(price, tax) { | 1 | function calculateTotal(price, tax, discount = 0) { |
| 2 | const total = price + tax; | 2 | const subtotal = price - discount; |
| 3 | return total; | 3 | const total = subtotal + tax; |
| 4 | } | 4 | console.log("Total computed:", total); |
| 5 | return total; | ||
| 6 | } |
How to Use Diff Checker & Text Compare
- Paste your original text or code in the left box (Before)
- Paste your modified text or code in the right box (After)
- Choose between Side-by-Side Split view or Unified line view
- Optionally toggle Ignore Whitespace or Swap sides
- Inspect highlighted additions (green) and deletions (red)
📖 Technical Encyclopedia & Standards Reference
Compare two text files, code snippets, or documents side-by-side. Highlight added, removed, and modified lines with instant visual diff. 100% private. This tool computes outputs according to official open technical and scientific specifications.
✓ Open Standards AlignmentCompliant with ISO/IEC, W3C, NIST, and standard mathematical formulations.
✓ 100% Client-Side / SecureZero server logging. Computations execute entirely in your local browser sandbox.
Explore more formulas in our Tools Encyclopedia & Glossary →
Frequently Asked Questions
What is a Diff Checker?
A Diff Checker compares two texts or code files line-by-line to identify differences, showing additions in green, deletions in red, and unchanged lines.
Is my text sent to any server?
No, all text comparison happens 100% client-side in your browser. Your confidential code and documents never leave your computer.
Can I ignore whitespace differences?
Yes, check the "Ignore Whitespace" option to disregard leading and trailing spaces or tab variations.