Learn How File Formats Work

Explore the byte structure of real files to understand formats.

Níl gá le logáil isteachFanann comhaid príobháideach

Buail comhaid anseo, nó cliceáil chun brabhsáil

Any file gan teorainn méid comhaid

Brabhsáil comhaid

Ní fhágann do chomhaid do ghléas riamh. Tarlaíonn gach próiseáil go háitiúil i do bhrabhsálaí.

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.

Roghnaigh Comhad

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

Próiseas

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

Íosluchtaigh

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

✓Go hiomlán saor in aisce - gan aon chostais i bhfolach, riamh

✓Níl cuntas, ríomhphost ná logáil isteach ag teastáil

✓Ní fhágann comhaid do ghléas riamh

✓Níl aon teorainn le méid comhaid ar bith

✓Gan comhartha uisce ar aon aschur

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