Corrupt Any File Online — Generic File Corrupter

Corrupt any file instantly with this free online tool. Our generic file corrupter supports all file types — documents, archives, images, videos, audio, and more. Processing runs entirely in your browser for total privacy.

Use this single page to corrupt PDF, DOCX, XLSX, ZIP, RAR, JPG, PNG, MP4, MP3 — or any custom file format. The corrupted output keeps the original filename and extension but will generally fail to open or will show errors.

Universal tool for developers, QA, and training
Useful for testing error handling, import validation, and recovery tools
Safe — files never leave your device

Corrupt Any File (Drop any file)

Drag & drop any file here
or click to browse • all extensions accepted

Irreversible. Always work on a copy. Files processed locally — not uploaded.

Universal Online File Corrupter — How It Works

This universal file corrupter modifies the binary contents of a file in controlled ways to intentionally break its structure. Because file formats differ, the algorithm applies a generic-but-safe strategy: it avoids overwriting the very first bytes (file signatures) to retain the extension while changing internal bytes and blocks that typically cause parsers to fail. Because everything runs inside your browser, your original files are never uploaded or stored.

⚡

One tool for all files

Handle PDFs, Office docs, images, videos, audio, archives and more.

🔒

Privacy-first

All processing is local — no network transfer or storage.

🧰

Developer-friendly

Create reproducible corrupted files for QA and testing.

✔️

Free & fast

No sign-in, no limits — corrupt files quickly.

How to Use the Generic File Corrupter

Back up your original file. Corruption is irreversible.
Drag & drop the file into the upload area or click to choose it.
Click CORRUPT FILE NOW and wait for the tool to process the file locally.
Download the corrupted file and test how your system handles it.

Practical Use Cases

A universal corrupter is useful across many workflows:

Test importers to ensure graceful handling of malformed files
Create test suites for recovery and repair tools
Train support and QA teams with realistic corrupted files
Simulate network interruptions and partial downloads

FAQ

What file types are supported?: All file extensions are supported. The tool preserves the filename and extension while corrupting internal bytes.
Are my files uploaded?: No. Everything is processed in your browser; no data is sent to any server.
Can a corrupted file be repaired?: Sometimes, but intentional corruption is designed to break structure — repair may not be possible.
Why not overwrite the first bytes?: We avoid overwriting initial signature bytes (magic headers) to keep the original extension — this helps create realistic broken files while making it clear what format was intended.
Does this work on mobile?: Yes, though very large files may be limited by mobile browser memory.

Related Tools

Final Notes

This universal corrupter is intended for testing, education, and development. Always keep backups of originals, and do not use corrupted files to mislead or cause harm. If you want a version of this page that restricts to specific file types or adds a file-type selector UI, I can add that next.