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Text Diff Checker

Paste two versions of text side by side to instantly highlight what changed — additions, deletions, and modifications.

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Text Diff Checker – Compare Two Texts for Differences

A text diff checker is an essential tool for writers, developers, editors, and students who need to compare two versions of text. Whether you're comparing a draft to a final version, checking a student's revised essay, or reviewing code changes, our free Text Diff tool makes it instant and easy.

  1. Paste Text A (the original or older version) into the left box.
  2. Paste Text B (the modified or newer version) into the right box.
  3. Click Compare to see a side-by-side comparison with all differences highlighted.
What is a text diff?
A "diff" (short for difference) is a comparison between two texts that highlights what was added, removed, or changed. Programmers use diffs to review code changes; editors use them to track revisions in documents.
Is this tool case-sensitive?
Yes, the comparison is case-sensitive by default. "Hello" and "hello" will be treated as different text. This ensures precise, accurate diffs.
What is the Unified Diff format?
Unified diff is the standard format used by Git and other version control systems. Lines starting with "+" were added, lines starting with "-" were removed, and lines with no prefix are unchanged context lines.

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