FuryJSON: JSON Viewer & Editor

FuryJSON is a fast JSON viewer, JSON editor, formatter and validator for Android. Open JSON files from your device, inspect data in a visual tree, or edit raw JSON text with syntax highlighting.

Designed for developers, testers, API users and anyone who works with JSON documents.

Key features:

- JSON tree viewer: browse objects and arrays as a collapsible node tree.
- Visual JSON editor: edit values, keys and nodes directly from Tree View.
- Text JSON editor: edit raw JSON with syntax highlighting and undo/redo.
- JSON formatter: pretty-print and format JSON for easier reading.
- JSON validation: detect invalid JSON before applying text edits.
- Search and filter: find text matches and filter JSON tree nodes quickly.
- Large file support: optimized editor engine for large JSON documents.
- Two-way editing: switch between Tree View and Text View while keeping content in sync.
- Share and export: share JSON files through the Android share sheet.
- CSV export [Premium]: export JSON data to CSV.
- Expression evaluator [Premium]: run JSONata-style expressions to query and transform JSON.
- Tablet friendly: adaptive two-pane layout for tablets and landscape screens.
- Offline and private: files stay on your device unless you choose to share or export them.

FuryJSON is useful for viewing API responses, editing configuration files, formatting JSON data, inspecting logs, validating JSON documents and working with structured data on Android.