Diff CheckerJune 7, 2025

Compare Text Files Online: Find Differences Instantly

Need to see what changed between two versions of a file? Our Diff Checker highlights additions, deletions, and modifications in seconds.

Introduction

Tracking changes in code or text documents can be a nightmare if you're doing it manually. Did you fix that typo? Did you add the new function? TekToolHub's **Diff Checker** visualizes the differences between two blocks of text side-by-side.

How It Works

We use a standard "diff" algorithm to compare the Original Text (Left) with the Modified Text (Right).

  • **Green:** Added lines.
  • **Red:** Deleted lines.
  • **Yellow/Highlight:** Modified content within a line.

Use Cases

  • **Developers:** Compare code snippets before committing.
  • **Writers:** See edits made by an editor or proofreader.
  • **Legal:** Compare contract versions to ensure no unauthorized changes.

How to Use

  1. **Paste Original:** Put your old text in the left box.
  2. **Paste Modified:** Put your new text in the right box.
  3. **Compare:** Click the button.
  4. **Analyze:** Scroll through to see the highlighted differences.

Spot the difference instantly with **Diff Checker**.

T

TekToolHub Team

Building free, privacy-focused tools for developers and creators.