Learn How File Formats Work

Explore the byte structure of real files to understand formats.

Prijava ni potrebnaDatoteke ostanejo zasebne

Spustite datoteke sem ali kliknite za brskanje

Any file brez omejitve velikosti datoteke

Brskanje po datotekah

Vaše datoteke nikoli ne zapustijo vaše naprave. Vsa obdelava poteka lokalno v vašem brskalniku.

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.

learning tips

🎓

Compare the headers of a PNG, a PDF, and a ZIP to see how formats announce themselves.

🔢

Seeing real bytes alongside ASCII makes format specs much easier to follow.

🧩

A hands-on way to understand magic numbers and headers.

🔒

Experiment freely — nothing is uploaded.

Izberite Datoteka

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

Proces

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

Prenos

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

✓Popolnoma brezplačno – brez skritih stroškov

✓Račun, e-pošta ali prijava niso potrebni

✓Datoteke nikoli ne zapustijo vaše naprave

✓Nobenih omejitev velikosti datoteke

✓Brez vodnih žigov na nobenem izpisu

Identify a File's Real Type

Check a file's magic number to see what it actuall

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