WhatsYourSign Installer
WhatsYourSign Installer installs or removes the WhatsYourSign Finder extension so you can inspect a file’s code-signing details in macOS.
What is WhatsYourSign Installer?
WhatsYourSign Installer is the macOS installer app for WhatsYourSign, a security utility that adds a Finder option for viewing a file’s code-signing information. It helps users quickly check whether an app, binary, document, or disk image is signed, who signed it, and whether the signing status looks trustworthy. This is useful for security-conscious Mac users, developers, IT staff, and anyone who wants more context before opening unfamiliar files. After installation, WhatsYourSign integrates with Finder so you can right-click an item and open its signing details without using Terminal or separate analysis tools. The installed app can also expose hash values such as MD5, SHA-1, and SHA-256 for the selected item. Objective-See publishes it as a native macOS utility for security and file trust inspection workflows.
Key features
- Install or uninstall the WhatsYourSign Finder integration
- View code-signing information directly from the Finder context menu
- Check whether a file is signed by Apple, a third party, or not signed
- See hash values including MD5, SHA-1, and SHA-256 for selected items
- Inspect signing details for apps, binaries, documents, and disk images
- Open the installed WhatsYourSign app to manage settings and check for updates
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Safety overview
Status: Safe
This is a legitimate installer for a macOS security utility. Its Finder integration and extension-related behavior are normal for its purpose, and some signing or notarization checks may trigger network access to Apple services. Keep it only if you use WhatsYourSign; removing it mainly takes away the Finder menu option and related inspection features.
Recommendation: Keep WhatsYourSign Installer if you still use WhatsYourSign or want an easy way to reinstall, update, or uninstall it later. If you no longer use the Finder signing tool, you can remove the installer app without affecting your personal files; the WhatsYourSign feature itself can be removed through its own uninstall process.
Common paths
/Applications/WhatsYourSign Installer.app/Applications/WhatsYourSign.app
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