Identify a File's Real Type

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

로그인 불필요파일이 비공개로 유지됨

파일을 여기에 끌어다 놓거나 클릭하여 찾기

Any file 파일 크기 제한 없음

파일 찾기

파일이 기기를 떠나지 않습니다. 모든 처리는 브라우저에서 로컬로 이루어집니다.

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.

파일 선택

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

처리

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

다운로드

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

✓완전 무료 — 숨겨진 비용 없음, 영원히

✓계정, 이메일, 로그인 불필요

✓파일이 기기를 절대 떠나지 않음

✓파일 크기 제한 없음

✓출력에 워터마크 없음

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