iTool

Text Diff

Free online text diff tool — compare two texts side by side and spot every difference instantly. No install, no signup.

Everything stays on your device. Nothing is sent to a server, so you can use it with confidence.

Text Tools

Text 1

0chars
0 chars 0 bytes (with spaces) | 0chars 0 bytes (no spaces)

Text 2

0chars
0 chars 0 bytes (with spaces) | 0chars 0 bytes (no spaces)

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Frequently Asked Questions

What is the difference between line-by-line and character-by-character comparison?

Line-by-line comparison shows which lines were added, deleted, or changed. Character-by-character comparison highlights exactly which characters within a line have changed. This tool shows differences at the character level for fine-grained detail.

Can I compare text while ignoring case?

Currently, comparisons are case-sensitive. 'Hello' and 'hello' are treated as different strings.

Can I see the differences at a glance?

Added text is highlighted in green and deleted text in red. Unchanged sections are displayed as-is, so you can immediately spot what changed.

Can it be used to compare code?

Yes, you can paste source code content and compare it. Source code, config files, JSON, XML, and any other text-based content can all be compared.

Can I save or export the comparison result?

Currently, only on-screen viewing is supported. If needed, you can use your browser's screenshot feature or copy the result text directly.

Live Compare

See differences instantly as you type

Handy Tools

Change line breaks, remove spaces, etc.

Free

100% free thanks to ads.

Key Features

  • Live Compare: See differences instantly as you type
  • Side by Side: View texts side by side for easy comparison
  • Unified View: See additions and deletions in one view
  • Edit Tools: Newline convert, space removal, and more

How to Use

  1. Enter your first text in the left area
  2. Enter your second text in the right area
  3. Differences are highlighted automatically
  4. Switch tabs to choose unified or side-by-side view

Available Tools

  • Reset All: Clear all text
  • Swap Texts: Switch positions of Text 1 and 2
  • Newline → Space: Convert all newlines to spaces
  • Remove Spaces: Remove all space characters
  • Remove Empty Lines: Remove blank lines only

Use Cases

  • Code review and change tracking
  • Document version comparison
  • Before/after translation comparison
  • Data integrity verification

Help us improve this tool

Share what you like, what needs work, or features you'd like to see

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