Identify a File's Real Type

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

Prihlásenie nie je potrebnéSúbory zostávajú súkromné

Presuňte súbory sem alebo kliknite pre prehľadávanie

Any file žiadne obmedzenie veľkosti súboru

Prehľadávať súbory

Vaše súbory nikdy neopustia vaše zariadenie. Všetko spracovanie prebieha lokálne vo vašom prehliadači.

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.

Vybrať súbor

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

Spracujte

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

Stiahnite

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

✓Úplne zadarmo — nikdy žiadne skryté náklady

✓Nie je potrebný účet, e-mail ani prihlásenie

✓Súbory nikdy neopustia vaše zariadenie

✓Žiadne obmedzenia veľkosti súborov vôbec

✓Žiadne vodoznaky na žiadnom výstupe

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Spot readable text embedded in a binary file.

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Examine an unknown file's bytes without opening or

Learn How File Formats Work

Explore the byte structure of real files to unders