Tool Base

Utilities

File Signature Checker

Choose a file. The first bytes are read and compared with known signatures. A mismatch with the filename extension is reported when both are known.

How to use File Signature Checker

  1. Step 1

    Start

    Open the tool and add your input.

  2. Step 2

    Adjust

    Review the options and run the action.

  3. Step 3

    Get the result

    Copy, download, or use the live result.

File Signature Checker features

  • Hex header
  • Known signatures
  • Extension comparison

Supported Formats / Details

Input formats

  • File

Output formats

  • Hex
  • Signature

Supported formats

  • File

Frequently Asked Questions

Do you scan the whole file?

Only the leading bytes needed for common signatures.

Unknown header?

The hex dump is still shown with an unknown-signature message.

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