📖What is this tool?

Writers, developers, and editors often have two versions of a file and need to know what changed. This tool instantly highlights every difference between two text files, config files, or code snippets—no more squinting or manual checks.

This tool is part of ConvertPilot's collection of free utilities designed to make your workflow simple, fast, and secure. Whether you're a professional or casual user, you'll find it easy to use with no learning curve.

🚀How to use it

Compare files in three easy steps:

Paste or upload the first file

Add your original text, config, or code file.

Paste or upload the second file

Add the new or changed version.

Click Compare

See all differences instantly—additions, deletions, and changes are highlighted.

✨Key benefits

There are many reasons to use Diff Checker for your needs:

Instant Results

No more manual line-by-line checks. See all changes at a glance.

Works for Any Text

Compare code, config files, essays, or any plain text.

No Installs Needed

Runs in your browser—no software or plugins required.

💡Pro tips

Use for code reviews

Quickly spot changes in pull requests or config updates.

Writers: check drafts

See what changed between essay drafts or article versions.

💻Why Developers Love Diff Tools

Debugging config files or reviewing code is much easier when you can see every change instantly.

✍️Writers: Track Your Revisions

Never lose track of edits—compare drafts and see every change.

Your Privacy is Protected

All file processing happens directly in your browser. Your files are never uploaded to our servers, ensuring complete privacy and security.

How to Use Diff Checker

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Diff Checker