The JSON Formatter Tool is a lightweight yet powerful utility designed to help developers, analysts, and non-technical users quickly format, validate, and visualize JSON data. It transforms messy or minified JSON into a clean, readable, and structured view, making debugging and data inspection effortless.

Key Features

• Pretty Printing: Converts compact JSON into an indented, human-readable format.

• Minification: Compresses JSON by removing extra spaces, line breaks, and unnecessary characters.

• Validation: Detects syntax errors and highlights exact locations to speed up debugging.

• Syntax Highlighting: Color-codes keys, values, and data types for easy scanning.

• Tree View Mode: Allows users to expand and collapse JSON objects for better navigation.

• Search & Filter: Instantly locate specific keys or values within large datasets.

• Offline Support: All processing happens locally—no data is sent to a server.

Tech Stack

• Frontend: HTML5, CSS3, and vanilla JavaScript with DOM manipulation.

• Core Engine: Uses JSON.parse() and safe error handling for parsing and formatting.

• Optional API Mode: REST endpoint for server-side formatting in larger workflows.

Use Cases

• Developers inspecting API responses

• Data analysts cleaning JSON before importing into tools

• QA testers validating JSON payloads in test suites

• Students learning JSON structure and syntax

Roadmap

• Dark mode UI theme

• Export formatted JSON as .json or .txt

• Bulk JSON file formatting

• Live JSON-to-YAML conversion