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Binary File Header and Magic Number Inspector

Drop or select a file to read its magic number, detect the real format, and show a hex dump of the first 256 bytes.

Quick switch→Hash Generator
BinaryFile headerInspector
Quick switch:Hash GeneratorBase64 Encode/Decode

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Use cases

  • Confirm a file’s real format
  • Check renamed extensions
  • Learn common file signatures

How to use

  1. Drop or choose a file
  2. Review the detected format
  3. Read the hex dump

Example input and output

Action

Drop a PNG file

Output

PNG image / Magic: 89 50 4E 47

FAQ

Which formats are supported?

Common ones such as PNG, JPEG, GIF, PDF, ZIP, MP4, MP3, ELF, PE, and Mach-O—about 26 signatures.

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Base64 Encode/Decode

Base64 Encoder and Decoder

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Encode and decode Base64 in the browser, with standard and URL-safe variants, automatic direction detection, and optional file-to-Base64 conversion. Useful for API debugging and local data prep.

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