File Corrupter
Corrupt any file by randomly changing its bytes. Perfect for testing error handling or having fun.
Click to upload, drag and drop, or paste a file here
Any file type and size is accepted. Large file sizes may slow down or crash your browser, as your files are never uploaded to our servers and are processed entirely in your browser.
What Is a File Corrupter?
A file corrupter is a tool that intentionally damages a file by randomly altering its bytes. This makes the file unreadable by its associated programs, often for testing purposes, pranks, or creative projects.
This tool works entirely in your browser. Your file is never uploaded to a server, keeping your data private.
Why Would You Corrupt a File?
- Testing error handling – See how software reacts to corrupted data.
- Pranks – Send a friend a corrupted image or document.
- Get more time to complete an assignment – Not recommended as cheating is bad and this is unethical, but many people corrupt files to submit as assignments. When their professor can't open the file, they act like it's a software glitch and send over the real file which they had extra time to complete.
- Security research – Test malware scanners or recovery tools.
How Does It Work?
When you corrupt a file, the tool reads its binary data, randomly selects a percentage of bytes (based on the intensity slider), and replaces each with a random value. This destroys the file's structure, making it unusable.
The original file remains untouched; a new corrupted copy is downloaded to your device.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing happens locally in your browser. Your file never leaves your device.
Can I corrupt any file type?
Yes, absolutely any file type is accepted. The tool works with raw bytes, regardless of extension.
Will the corrupted file open?
In most cases, no. The corruption destroys the file's internal structure, so programs will display an error when trying to open it. Sometimes, with low intensity, a file may partially open but with glitches.
Is this reversible?
No. Once a file is corrupted, it cannot be restored unless you have a backup of the original. Always keep a copy before corrupting.
Are there any file size limits?
The tool loads the entire file into browser memory. Very large files (over a few hundred MB) may cause performance issues or crash the tab. Use reasonable file sizes.