Corrupt Excel File Online

Upload your Excel document (.xlsx or .xls), select a corruption level, and download the broken file instantly.

Corruption Level

Corrupt Excel File Online – Break Your XLSX Files Instantly

Need to test how your application handles broken Excel sheets? Our online Excel file corrupter lets you instantly corrupt an XLSX file with just a few clicks. No registration, no uploads to external servers — just fast, secure corruption done directly in your browser.

Whether you want to corrupt an Excel file for QA testing, simulate a spreadsheet crash, or demonstrate file recovery, this tool supports XLSX corruption online across light, medium, and heavy levels.

Upload your spreadsheet, pick a corruption level, and download the broken version of your Excel document in seconds.

❓ Frequently Asked Questions

How does this Excel corrupter work?

It alters the internal binary data of your uploaded XLSX file based on the corruption level you choose. This simulates file damage for testing or study purposes.

Will my Excel file be stored or logged?

No. Your file is never uploaded to any server. We do not store or access your documents.

Can I recover a corrupted Excel file?

You can try to recover it using Microsoft Excel’s built-in repair options. However, results may vary depending on the corruption level.

What types of Excel files are supported?

Currently, the tool supports `.xlsx` format files which are standard in modern Microsoft Excel applications.

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