Identify a File's Real Type

Check a file's magic number to see what it actually is.

Sin necesidad de registroLos archivos permanecen privados

Arrastra archivos aquí o haz clic para explorar

Any file sin límite de tamaño de archivo

Explorar archivos

Tus archivos nunca salen de tu dispositivo. Todo el procesamiento se realiza localmente en tu navegador.

Inspect the raw bytes of any file — offset, hex, and ASCII columns, like a classic hex editor. The file is read locally and never uploaded.

file identification tips

🔎

The first bytes (magic number) reveal the true format regardless of the file extension.

🏷️

The tool names common types automatically — PNG, PDF, ZIP, MP4, and more.

🕵️

Useful when a file has the wrong or no extension, or you suspect it's mislabeled.

🔒

Read locally — safe for unknown files.

Elegir archivo

Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

Procesar

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Descargar

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Completamente gratis — sin costes ocultos, nunca

✓Sin cuenta, correo ni registro requerido

✓Los archivos nunca salen de tu dispositivo

✓Sin límite de tamaño de archivo en absoluto

✓Sin marcas de agua en ningún resultado

Debug a Binary File

Inspect headers and bytes while debugging a file f

Find Text Strings in a File

Spot readable text embedded in a binary file.

Inspect a Suspicious File Safely

Examine an unknown file's bytes without opening or

Learn How File Formats Work

Explore the byte structure of real files to unders