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What is Text Diff & Compare Tool?

Need to spot what changed between two versions of a document? Paste the original and modified text side by side and this tool highlights every addition, deletion, and modification instantly. Character-level highlighting catches even the smallest typos that line-level diffs would miss.

Step by Step

  1. 1Paste the original text in the left panel
  2. 2Paste the modified text in the right panel
  3. 3Review the highlighted differences
  4. 4Toggle between side-by-side and unified view as needed

Feature Highlights

  • Side-by-side and unified diff views
  • Character-level diff highlighting within changed lines
  • Change statistics (added, removed, modified line counts)
  • Ignore-whitespace option for cleaner comparisons
  • Line number display for easy reference

How It Works

The comparison engine computes the shortest edit script between your two inputs, then renders the differences with color-coded highlights. You can switch between side-by-side and unified (git-style) views depending on your preference, and change statistics give you a quick summary of how many lines were added, removed, or modified.

Popular Scenarios

  • Reviewing code changes

    Compare two versions of source code to catch bugs and verify logic before committing or merging.

  • Tracking document revisions

    See exactly what was edited between drafts of contracts, reports, or articles.

  • Debugging config differences

    Compare configuration files across environments to pinpoint missing or changed settings.

  • Verifying translation accuracy

    Compare original and edited translations side by side to confirm nothing was accidentally omitted.

Frequently Asked Questions

What is the difference between side-by-side and unified view?

Side-by-side shows the original and modified text in parallel columns. Unified view displays both in a single column with + and - markers, similar to git diff output.

Can I compare entire files?

Yes — copy the contents of each file and paste them into the left and right panels. There is no strict size limit, though very large texts may take a moment to process.

Does ignoring whitespace affect the results?

When enabled, the ignore-whitespace option treats differences in spaces, tabs, and trailing whitespace as non-changes, so only meaningful content differences are highlighted.

Privacy First

All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.