Text Diff Checker

Compare two texts side by side and highlight additions and deletions in color.

広告スペース 1

How to use

  1. Paste the original text on the left.
  2. Paste the modified text on the right.
  3. Click Compare to see differences.
  4. Review added lines in green and removed lines in red.

About this tool

The Text Diff Checker lets you see exactly what changed between two versions of a document. It color-codes additions and deletions so you can review edits at a glance.

Features

Side-by-side view, line and character level highlighting, support for Japanese text, and fast in-browser processing.

Use cases

Reviewing manuscript edits, comparing code snippets, checking translation revisions, and auditing contract changes.

Why this tool

It provides a fast, private diff without requiring any install, making it ideal for writers and editors who need quick comparisons.

広告スペース 2

FAQ

Can it compare long documents?
Yes, the comparison runs in your browser and handles long texts smoothly.
Does it show inline character diffs?
Yes, changes are highlighted at the line and character level.
Is the diff saved anywhere?
No, nothing is uploaded or stored; comparison happens locally.