Learn How File Formats Work
Explore the byte structure of real files to understand formats.
Drop files here, or click to browse
Any file no file size limit
Your files never leave your device. All processing happens locally in your browser.
Inspect the raw bytes of any file β 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 β nothing is uploaded.
How It Works
Why use ours?
Also check outβ¦
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