Json Genie - JSON Editor

Json Genie is a powerful, fully offline JSON file opener, viewer, and editor for Android. It opens .json and JSONC (JSON with comments) files from your device, or straight from the share menu of any other app, and renders them in a clean, expandable tree view with type badges, search, and copy-on-tap.

KEY FEATURES:

JSON File Management
- Open .json and JSONC files from your device or share them in from other apps
- Recent files history with size, date and one-tap reopen
- Quick access with bottom navigation for Home, Reports, History, and Settings

Tree View
- Browse JSON in a clean expandable tree with type badges (string, number, boolean, null, object, array)
- Copy values, subtrees or JSON paths with one tap or long-press
- Search across keys and values with match count and jump-to-match navigation

JSON Editor
- Full JSON editor with monospace font, line numbers and syntax highlighting
- Real-time validation: green checkmark when valid, exact line/column on errors
- Undo, redo, find and replace in the editor

Formatting Tools
- Pretty-print with configurable indentation (2, 4 or 8 spaces)
- Minify and beautify JSON with one tap
- Auto-format on open (optional)

Detailed Reports
- Live JSON analysis with file size, line count, node count, depth, and type totals
- Structure insights for objects, arrays, keys, strings, numbers, booleans, and nulls
- Library overview with recent activity, duplicate detection, valid file count, and size trends

Customization
- Light and dark themes
- Adjustable editor font size
- Works on phones, tablets and foldables with adaptive layouts

HOW IT WORKS:
1. Open a file from the picker or share it into Json Genie
2. Browse it in the tree view, search keys or values, copy anything
3. Switch to the editor to change the raw JSON with live validation
4. Use detailed reports to inspect and understand your JSON data
5. Format, save or share your file - everything stays on your device

PRIVACY & SECURITY:
Json Genie is designed with your privacy in mind. All files are opened and edited locally on your device. No file content is ever uploaded to any server. The app works completely offline and requires no permissions beyond file access.

Your data stays on your device. Always.