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Use the tool above to corrupt any file — safely, quickly, and for free. For advanced users, you can also simulate batch uploads, test edge cases, or create training data with intentionally malformed files.

Our free online file corrupter is fast, private, & secure, with no server-side storage. Just upload any supported file, select corruption level then click “corrupt my file,” and instantly download your …

Select an existing file from your computer and define how much do you want to corrupt it. This tool is ideal for testing programs/applications against corrupted files.

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This online File Corrupter tool provides a straightforward way to intentionally introduce corruption into various file types for testing or demonstration purposes.

Use our online “Corrupt My File” tool to corrupt any file type — Word, Excel, PPTX, video, audio, or archive — in seconds. Simply upload your file and download the corrupted version for testing, error …

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Easily corrupt files online in seconds with the fastest and most secure tool. Upload .zip, .pdf, .docx, and other formats to quickly make your files unreadable for testing or development.