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Text Diff Checker

Compare two texts and see the differences highlighted. Additions are shown in green and deletions in red.

Free Text Diff Tool — Compare Two Texts Side-by-Side

Our free online text diff tool compares two pieces of text side-by-side and highlights every addition, deletion, and modification with color-coded inline markup. Whether you're reviewing contract revisions, comparing code snippets between versions, checking edited drafts against originals, or auditing configuration file changes, our professional diff checker delivers fast, accurate text comparison without software installs or signup forms.

Text comparison is essential for legal review, software development, copy editing, content versioning, and translation workflows. Manually scanning two long documents for differences is slow and error-prone — small changes are easily missed, and word-level edits can be invisible at first glance. Our diff tool eliminates that risk with character-level, word-level, and line-level comparison modes, ensuring no change goes unnoticed.

Key Features

Multiple Comparison Modes

Compare at character, word, or line level depending on the granularity your review needs.

Side-by-Side Visual Diff

Original and modified text appear in parallel columns with color-coded changes for fast visual scanning.

Inline Highlighting

Additions appear in green, deletions in red, and modifications in yellow for instant identification.

Patch Export

Export differences as a unified diff patch file for Git, code review, or documentation history.

How to Use This Tool

  1. 1

    Paste your original text into the left editor pane.

  2. 2

    Paste the modified or revised text into the right editor pane.

  3. 3

    Choose comparison granularity (character, word, or line level).

  4. 4

    Review the highlighted differences in the visual diff output.

Common Use Cases

Contract Redlining

Compare contract drafts between revisions to verify counterparty edits, additions, and deletions before signing.

Code Review

Diff two code snippets, configuration files, or scripts when Git is unavailable or quick comparison is needed.

Editorial Workflow

Track changes between draft and edited versions of articles, blog posts, and marketing copy for editorial QA.

Translation Review

Verify localization edits and translation changes against source content for accuracy and consistency.

Why Choose Our Text Diff Tool?

Our text diff tool is a free professional online tool used by lawyers, software engineers, copy editors, technical writers, translators, and quality assurance teams every day. Unlike command-line diff tools requiring technical knowledge or paid desktop comparison software, our browser-based text comparison tool delivers instant visual diffs with no signup, no software installation, and no watermarks. Whether you're redlining contracts before counterparty negotiations, reviewing code changes outside a Git workflow, comparing draft versus published article versions, or auditing translation accuracy, our diff checker shows exactly what changed at a glance. With character, word, and line-level comparison modes plus exportable patch files, our text diff tool scales from quick personal reviews to enterprise document workflows.

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