FormatKit
Fast archive and conversion
Only for Mac
Free
Mac
Compression and conversion tools for audio, video, images, and archives — fast, simple, and built directly into Finder.
Overview
FormatKit is a lightweight Finder extension for macOS that lets you archive and convert files directly from the right‑click menu. Compress folders, convert audio formats, and transcode video — all locally on your Mac.
No cloud services. No uploads. No analytics. Your files never leave your device.
Core Features
• Archive (ZIP, GZ, XZ)
• Audio Conversion (M4A, WAV, AIFF)
• Video Conversion (MP4, MOV)
• Finder Integration (Right‑click → Archive or Convert)
• Local Processing (Privacy‑first design)
How It Works
Right‑click a file or folder in Finder.
Choose Archive or Convert.
Select a format.
FormatKit processes everything locally and automatically closes when finished.
Why FormatKit
• Fast — Built directly on native macOS tools.
• Private — No data collection or network activity.
• Minimal — No background processes running.
• Integrated — Feels like a native Finder feature.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Added improved visibility into archive and extraction progress
• Fixed edge cases that could cause failures with certain file sets
• Improved overall reliability and performance
The developer, Aaron Joseph Beaver, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Offband LLC
- Size
- 1.8 MB
- Category
- Utilities
- Compatibility
Requires macOS 15.6 or later.
- Mac
Requires macOS 15.6 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Offband LLC