JSON Master: Editor & Viewer
JSON to CSV, XML, Excel Tool
Free · In‑App Purchases · Designed for iPad
The #1 JSON toolkit. View, edit, format JSON/XML/CSV on the go. High-performance validator & converter. Offline-first, pro-ready.
JSON Master is a professional JSON Formatter / Viewer / Converter for developers (offline iOS tool).
Three key points upfront: 100% offline processing, privacy-safe, large file support — your data is never uploaded to any server.
Core Features (Developer Favorites):
JSON Formatter & Beautifier: One-click format/beautify/minify, with syntax highlighting support.
JSON Viewer: Tree View / Text views for clear structure visualization.
JSON Validator: Instant syntax error detection (with line numbers) for quick API response debugging.
Fast Converter: Bidirectional JSON ↔ CSV / XML / Excel (.xlsx) conversion.
Large File Support: Smoothly open and edit large files.
Import Anywhere: Import from Clipboard / Files for debugging anytime.
Why Choose JSON Master?
• Privacy First: All formatting, validation, and conversion happen locally on your device.
• Focused & Distraction-Free: Clean interface with no redundant steps, perfect for quick data inspection and fixing.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://legal.rkvpxdr.com/privacy.html
Better, Faster, Stronger!
New Home Interface: Re-designed with you in mind—access your core tools with fewer taps.
Powerful Editing: We've fine-tuned the Editor and Calculator logic to handle your tasks more efficiently.
Polished Details: Updated UI feedback and toast notifications for a more responsive feel.
Reliability Update: Multiple internal enhancements to ensure JSON Master runs smoothly on all devices.
The developer, 嵩 张, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 嵩 张
- Size
- 38.7 MB
- Category
- Productivity
- Compatibility
Requires iOS 14.0 or later.
- iPhone
Requires iOS 14.0 or later. - iPad
Requires iPadOS 14.0 or later. - iPod touch
Requires iOS 14.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
English and 7 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- JSON Master Pro (Weekly) $1.99
- JSON Master Pro Lifetime $12.99
- Copyright
- © 2026 Song Zhang