AppMarketSpy › Developer Tools › JSON Formatter Viewer
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App info
- Developer
- Phuc Pham
- Category
- Developer Tools
- Released
- May 28, 2026
- Version
- 1.1.1 (Aug 19, 2026)
- Price
- Free
- Size
- 5.2 MB
- Requires
- iOS 17.0
- Age rating
- 4+
- Languages
- English
In-app purchases
| Syntax Inspector, One-Time | $39.99 |
| Parse & Fold Yearly | $19.99 |
| Color Highlight Weekly | $3.99 |
Current prices, App Store US.
🔒 Price history2 snapshots: when prices changed and new plans appearedGet Pro access
About JSON Formatter Viewer
Paste messy JSON and get clean, readable, correctly indented output in one tap. JSONViewer formats, validates, and beautifies any payload — right on your iPhone, fully offline. Most JSON tools are websites that make you paste sensitive API data into a stranger's server. JSONViewer keeps everything on your device: paste a response, a config file, or a log export, and it pretty-prints with color syntax highlighting instantly. Invalid JSON is flagged with the exact reason so you fix broken payloads fast — no guessing, no round trips to a browser. WHAT YOU GET - Clean, indented JSON from any pasted or copied payload in one tap - Instant validation that pinpoints exactly why a payload is broken - Minify mode to strip whitespace down to a compact one-liner - An interactive, collapsible tree so you can read deeply nested data at a glance - JSONPath queries that pull the exact value out of a…
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