Text & Code Diff Checker

Side-by-side text comparison highlighting additions, deletions, and line changes.

About this tool

Compare two versions of code, contracts, or drafts to instantly pinpoint modifications.

How to use this tool

  1. Paste original text on the left
  2. Paste modified text on the right
  3. Click Run to view line diffs

How it works

Implements a Longest Common Subsequence (LCS) algorithm to calculate minimal line edits.

When to use this tool

  • Comparing code before commit
  • Auditing revisions in legal contracts

Frequently asked questions

Can I compare large files?

Yes, comparison is processed in memory for fast performance.

Limitations

Calculates line-by-line diffs rather than inline character diffs.

Privacy

Code and text remain strictly in local memory.