A Flutter widget for rendering JSON as an expandable tree with syntax highlighting.

Features

  • Expand and collapse nested JSON objects and arrays.
  • Syntax highlighting for keys, strings, numbers, booleans, and null values.
  • Long-press context menu actions:
    • Copy value
    • Copy name
    • Copy property path
  • Light and dark themes through PrettyJsonTheme ThemeExtension.

Example

PrettyJson(
  encodedJson: '{"stringValue": "Hello, JSON tree!",emptyString": "","integerValue": 42, ... }',
  expanded: true,
  expandDepth: 1,
)

Pretty JSON Contextual Menu Options

Example app

A complete runnable sample is available in example/lib/main.dart.

Contributing and support

  • Open issues or feature requests in the repository issue tracker.

Libraries

flutter_pretty_json