File Type Checker
Identify file type by its magic bytes (file signature). Works without relying on file extension.Updated 2026-03-20
Click or drag a file here to identify its type
Frequently Asked Questions
What are magic bytes?
The first few bytes of a file that identify its format, regardless of extension.
Why check file type?
File extensions can be changed. Magic bytes reveal the true file format.
Is this free?
Yes, completely free. Files are analyzed locally.