Text Tools

Text Difference Checker

Compare two pieces of text and quickly find added, removed and changed content with this free online text difference checker.

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Text Difference Checker

Paste the original and revised versions of your text below, then select Compare Text to identify the differences.

Enter two pieces of text and select Compare Text.

Comparison Results

0 Added words
0 Removed words
0 Changed sections
Added text Removed text
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What Is a Text Difference Checker?

A text difference checker compares two versions of text and identifies where they differ. It can show content that has been added, removed or changed, making it easier to review revisions without manually reading both versions line by line.

This type of text comparison tool is useful when reviewing documents, website content, code-related text, articles, notes, drafts and other written material. Instead of repeatedly switching between two versions, you can place them side by side and generate a highlighted comparison.

Why Use Text Difference Checker?

Comparing text manually can make small changes difficult to spot. A text difference checker provides a structured way to review two versions and identify changes more efficiently.

1

Compare Two Texts

Compare an original version with a revised version to identify differences between them.

2

Highlight Added Text

New words and content found in the revised text are highlighted so they can be identified quickly.

3

Highlight Removed Text

Text that appears in the original version but not the revised version is shown as removed content.

4

Ignore Capitalisation

Compare text without treating uppercase and lowercase differences as changes.

5

Ignore Extra Whitespace

Optionally disregard differences caused by repeated spaces and other unnecessary whitespace.

6

Works in Your Browser

The comparison is performed directly in your browser without requiring additional software.

How to Use Text Difference Checker

Use the text comparison tool to compare an original version with a revised version in just a few steps.

  1. Enter the original text — Paste or type the first version of your content into the Original Text box.
  2. Enter the revised text — Paste or type the second version into the Revised Text box.
  3. Choose comparison options — Enable Ignore capitalisation or Ignore extra whitespace if those differences should not be counted.
  4. Compare the text — Select Compare Text to generate a highlighted difference report showing added and removed content.

Compare Two Texts Online

A text comparison tool is useful whenever two versions of the same content need to be checked for changes. For example, you might compare an original article with an edited version, review a revised document, check a piece of website copy or inspect changes made between two drafts.

The YesTools Text Difference Checker presents the comparison directly in the browser. Added content is highlighted separately from removed content, making changes easier to identify. The tool also provides a summary showing the number of added words, removed words and changed sections detected during the comparison.

Text Comparison for Documents and Content

Text comparison can be useful for editors, writers, students, developers, website owners and anyone who regularly works with multiple versions of written content. It can help verify that an updated document contains the intended revisions and make unexpected changes easier to spot.

Reviewing Text Changes Efficiently

For a useful comparison, place the earlier version in the Original Text field and the newer version in the Revised Text field. If formatting differences such as capitalisation or repeated spaces are not important, the available comparison options can be enabled before running the check.

How Text Comparison Works

The tool processes the two supplied text values in your browser and compares their word sequences. Matching portions are retained as unchanged content, while differences are identified as additions or removals. The results are then formatted into a readable comparison.

The comparison is intended to help with reviewing textual changes rather than determining whether two documents are legally, factually or technically equivalent. Very large amounts of text may require additional browser processing time, depending on the device and browser being used.

James William Steven Parker, creator of YesTools
Created by

James William Steven Parker

Creator & Developer of YesTools

James William Steven Parker is a web developer and technology professional with extensive experience in web development, web design, SEO, web hosting, systems analysis and cybersecurity. He created YesTools to provide fast, practical and free online tools for everyday tasks and technical work.

Learn more about James and YesTools

Frequently Asked Questions

A text difference checker compares two pieces of text and identifies content that has been added, removed or changed between the two versions.
Paste the original text into the first box, paste the revised text into the second box, and select Compare Text. The tool will generate a highlighted comparison of the differences.
Yes. The tool can compare substantial amounts of text, although very large inputs may require more processing time from your browser and device.
No. The original and revised text fields are not altered by the comparison. The detected differences are displayed separately in the results area.
Yes. Enable Ignore capitalisation before comparing the text. This treats uppercase and lowercase versions of the same letters as equivalent during the comparison.
Yes. The YesTools Text Difference Checker is free to use online.

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