whatsyoursign ☆

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Description:
Shows a files cryptographic signing information

Type: Cask | Latest Version: 3.2.1@0 | Tracked Since: Dec 28, 2025

Links: Homepage | @objective_see | formulae.brew.sh

Category: Security

Tags: security utility developer-tools macos code-signing

Install: brew install --cask whatsyoursign

About:
What's Your Sign? is a lightweight menu bar utility that displays the cryptographic signing information of any file. By simply dragging and dropping a file onto its interface, users can instantly view details such as the signing authority, certificate chain, and validation status. This tool provides a quick and easy way to verify file provenance and integrity before execution.

Key Features:

Menu bar utility for quick access
Drag-and-drop interface for file analysis
Displays signing authority and certificate details
Validates code signatures against Apple's root certificates

Use Cases:

Verifying the authenticity of downloaded applications before installation
Checking if a file has been altered or tampered with since it was signed
Inspecting the developer signature of system binaries

Alternatives:

codesign – Built-in command-line tool; What's Your Sign? provides a graphical interface for the same information.
KnockKnock – Also by Objective-See; focuses on persistent software and persistence mechanisms rather than individual file signatures.

Version History

Detected	Version	Rev	Change	Commit
Jan 17, 2026 10:32pm	3.2.1	0	VERSION_BUMP	13a51f3a
Jan 9, 2026 10:43pm	3.2.0	0	VERSION_BUMP	db13289f