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File Comparator is a lightweight tool that helps you visually and textually compare two files of the same type—CSV, JSON, or XML.

🔍 Key Features:

Supports CSV, JSON, and XML formats

Git-style diff view: highlights added, removed, and unchanged content

Word-level difference highlighting

Text-based diff mode for plain output

Download result as .txt

Sanitized HTML rendering for secure display

🎯 Ideal for developers, testers, analysts, or anyone working with data files who needs a quick and easy way to spot changes.

🔒 Security

Uses DOMPurify to sanitize dynamic HTML for secure rendering

🧩 How to Use:

Click the extension icon.

Upload two files of the same format.

Select the file type.

Choose Git-style diff or plain diff.

Click “Compare” to view results.

(Optional) Download the result as a .txt file.

Browser Compatibility

✔️ Fully compatible with Firefox

🧩 Manifest v3 extension

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