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Text Diff Checker

Compare two texts side by side and see added, removed and changed lines highlighted instantly. Copy the diff report. Free, private, runs in your browser.

All processing happens locally in your browser. Files are never uploaded.

Introduction

Text Diff Checker compares two pieces of text line by line and highlights exactly what changed. Paste the original text in one box and the modified text in the other, and the tool shows added lines in green and removed lines in red with a count of each. You can copy the diff report to share or save it.

Features

  • Compare two texts line by line
  • Added lines highlighted in green
  • Removed lines highlighted in red
  • Counts added and removed lines
  • Copy a unified diff report
  • Fully local, no uploads

How to use

  1. 1Paste the original text into the left box.
  2. 2Paste the modified text into the right box.
  3. 3Click Compare to see the differences.
  4. 4Review the highlighted lines and copy the report if needed.

Frequently asked questions

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