metamer ☆

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Description:
Accessible metadata editor for 16 Spotlight extended attributes

Type: Cask | Latest Version: 1.6,2025.07@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Productivity

Tags: metadata spotlight file-management finder utilities

Install: brew install --cask metamer

About:
Metamer is a GUI utility designed to inspect and edit the 16 standard Spotlight extended attributes on files and folders. It provides a user-friendly interface to modify metadata such as tags, comments, and Finder info, which are otherwise hidden from standard views. This tool is essential for users needing precise control over file metadata for organization or troubleshooting.

Key Features:

Graphical interface for viewing and editing all 16 standard extended attributes
Supports drag-and-drop for easy file selection
Displays raw and parsed data for attributes like kMDItemKeywords and kMDItemComment
Allows saving and restoring of attribute sets

Use Cases:

Cleaning up or removing hidden metadata before sharing files
Batch editing Finder tags and comments for better file organization
Debugging Spotlight search issues by inspecting file attributes

Alternatives:

xattr – Command-line tool for managing extended attributes; less user-friendly for detailed editing.
SetFile – Legacy command-line utility for setting Finder-specific attributes; lacks GUI and broad metadata support.

Version History

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