JSON Tools

JSON Tools is a fast, modern JSON workbench built for developers who live inside APIs.

WHAT YOU CAN DO

• Explore large JSON files in tree or raw view with collapsible nodes

• Edit with line-numbered syntax highlighting, Undo/Redo, and smart indent

• Catch errors as you type with instant JSON validation and clear messages

• Compare two JSON documents line by line with the diff engine

• Generate strongly-typed Dart model classes in one tap

• Spin up realistic mock data for unit tests in seconds

• Visualize structure as a connected graph with Graph View

BUILT FOR

Flutter / Dart developers, backend engineers, QA engineers, and anyone who wrestles with JSON every day.

EXPERIENCE

Personalized Light and Dark themes, smooth animations, and an ad-free Premium option for focused work.

Take control of your JSON—download JSON Tools now.