🔄

Text Diff Viewer

Compare two texts and see the differences highlighted. Supports line, word, and character-level diff. Perfect for config files, code review, or document comparison.

Text Tools Runs locally No data sent
line diff word diff compare text client-side only
Original (A)
0 lines
vs
Modified (B)
0 lines
Diff mode:
Diff Output
Paste text in both panels above to compare
💡
Line diff is best for comparing files and configs · Word diff is ideal for prose and natural language text · Char diff shows exact character-level changes. Context shows ±3 lines around each change —unchanged sections are collapsed.

What is Text Diff Viewer?

Text Diff Viewer compares two text inputs and highlights what changed so you can inspect additions, deletions, and edits quickly. It is useful for config changes, generated output checks, review workflows, and debugging before-and-after states.

How to Use Text Diff Viewer

  1. Paste the original text into one side and the revised text into the other.
  2. Run the comparison and review highlighted differences.
  3. Optionally ignore whitespace or line-ending differences if the tool supports it.
  4. Use the result in debugging, review, or documentation work.

Related Tools

🔍
Regex Tester
Test regular expressions with live match highlighting
 📝
Markdown Preview
Write Markdown and see a live rendered preview
 🎨
JSON Formatter
Prettify, minify, validate JSON; convert to CSV or SQL
Understand Text Diff Viewer ▾
Example
Input Original: Hello world
Output Revised: Hello there
Common Use Cases
  • Compare two text blocks during config, code, or document review
  • Inspect line and word-level differences before applying changes
  • Check generated output against an expected result in debugging flows
  • Share clear before-and-after comparisons in tickets or docs
Why Use This Tool
  • Useful for config review, docs edits, and generated output comparisons.
  • Makes additions, deletions, and replacements easier to spot than plain text.
  • Runs locally so compared text stays in the browser.
Frequently Asked Questions
Can I ignore whitespace differences?

Yes —enable the "Ignore whitespace" toggle to ignore leading/trailing spaces and line-ending differences.

Is there a size limit?

The viewer handles files up to several thousand lines comfortably in-browser.

What does Text Diff Viewer Online —Compare Two Texts Side by Side do?

Text Diff Viewer Online —Compare Two Texts Side by Side runs entirely in your browser and helps you complete this task without uploading data to a server.

Is Text Diff Viewer Online —Compare Two Texts Side by Side free to use?

Yes. This tool is free to use and does not require sign-up.