File Type Detector — Detect Real File Format Online
✓ Free File Type Detector via Magic Bytes
Identify a file's true format by reading its magic bytes — not its extension. 100% browser-based, no upload required.
🔍Magic Bytes Detection — Reads the raw binary header of each file to identify its true format — PNG, JPEG, PDF, ZIP, MP4, and 100+ more types.
⚠️Disguised File Alert — Compares detected format against the declared file extension and flags mismatches in red — catch malicious or renamed files instantly.
🖥️HEX + ASCII Dump — Click any result to expand a HEX dump showing the first 256 bytes, with magic bytes highlighted in yellow for easy identification.
📦Batch Processing — Upload multiple files at once via drag-and-drop, click, or Ctrl+V paste. All files are processed in parallel and shown in order.