About Magic Byte File Type Checker
Inspect the raw binary header signatures (magic bytes) of any file to reveal its authentic format (PNG, JPG, PDF, ZIP, TAR, MP4, EXE, ELF, WASM, SQLite) and detect malicious spoofed extensions.
Key Capabilities & Features
- Detects 30+ raw binary file signatures and headers
- Immediate spoof warning if extension does not match header
- Displays 32-byte hexadecimal header dump
- Identifies standard IANA MIME types automatically
How to Use Magic Byte File Type Checker
1
Select File
Choose any file with suspicious or unknown format.
2
Inspect Detection
Review the true detected format, category, and standard MIME type.
3
Check Spoof Warning
Ensure the file extension is genuine and not disguised.
Privacy & In-Browser Execution Guarantee
Reads file headers locally in browser RAM. Zero server transmission.
Frequently Asked Questions
What are magic bytes?
Magic bytes are unique binary signature sequences placed at the very beginning of a file that operating systems and parsers use to identify the true file format regardless of its extension.
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Detect MIME types from uploaded files or search the comprehensive 250+ IANA MIME database
File Metadata & Header Inspector
Inspect file properties, exact byte sizes, timestamps, SHA-256 hashes, and 256-byte hex dump