JSON Tree Visualizer

An interactive React application that renders JSON data as an expandable, searchable tree. Useful for exploring nested JSON structures, debugging API responses, and visualizing object graphs in a human-friendly way.

About

JSON Tree Visualizer lets you paste or load JSON and displays it as a collapsible tree. Features include:

• Expand / collapse nodes
• Search keys and values with highlighting
• Keyboard and mouse friendly canvas for navigation
• Lightweight and dependency-minimal UI for fast rendering of reasonably-sized JSON

This project is an educational and practical tool for developers and data engineers who want a quick way to inspect JSON payloads.

Demo / Screenshots

You can find a simple visual demo below showing the app layout (JSON input, search, and the rendered tree). It's a schematic SVG that acts like a screenshot for quick reference.

Technologies used

• React (Create React App)
• JavaScript (ES6+)
• HTML5 & CSS3
• Browser APIs (Canvas/SVG where applicable)

Key project files:

• src/App.js — application root
• src/components/TreeCanvas.js — tree rendering and interaction
• src/components/JSONInput.js — JSON paste / load UI
• src/utils/jsonToFlow.js — transforms JSON into the internal tree flow

Setting up the React app locally (Windows PowerShell)

Prerequisites:

• Node.js (14+ recommended) and npm (or yarn)

Clone the repository and install dependencies:

# from your preferred dev folder
git clone https://github.com/helper-uttam/JSON-tree-visualizer.git
cd JSON-tree-visualizer
npm install

Run the dev server:

npm start
# Opens http://localhost:3000 by default

Run tests (if any):

npm test

Build for production:

npm run build

Contributing

Contributions are welcome. Please open an issue for feature requests or bugs, and send a pull request for code changes.

License

This project is provided under the MIT License — see the LICENSE file (if present) or add one if you plan to open-source the repo.

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If you'd like, I can also add a short demo GIF, badges (build, license), or a troubleshooting / FAQ section next. Let me know which extras you want.

Getting Started with Create React App

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.

The page will reload when you make changes.
You may also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can't go back!

If you aren't satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.

You don't have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.

Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.

Code Splitting

This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting

Analyzing the Bundle Size

This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size

Making a Progressive Web App

This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app

Advanced Configuration

This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration

Deployment

This section has moved here: https://facebook.github.io/create-react-app/docs/deployment

npm run build fails to minify

This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify