JSON Assistant
JSON Viewer and Formatter
Only for Mac
Free
Mac
JSON Assistant is a fast, privacy-first JSON viewer and formatter for iOS and macOS.
Paste JSON, drop a file, or open from Share Sheet—then pretty-print, explore the tree, and save your snippets.
The UI uses a warm, high-contrast sepia theme that’s easy on the eyes without sacrificing legibility.
Great for
• Webhooks & API payloads.
• Server logs and debug output
• Inspecting large objects from the clipboard or files
Details
• Pretty-print and compact toggles
• Date/time stamps on saved entries
• Keyboard shortcuts
• Works offline; no account required
Privacy
All parsing happens on device. We do not collect your data.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
- Big performance improvements
- Better light/dark mode support, with menu to switch between them (Settings).
- Async collapse/expand for big JSON files.
- Key binding for moving through search findings ( Cmd + G and Cmd + Shift + G).
The developer, CoffeeDevs LLC, 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
- Coffeedevs LLC
- Size
- 3.5 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 CoffeeDevs LLC