JSON Formatter - Format JSON 4+

Format JSON, validate JSON, and compare JSON in seconds — import files, view tree structures, and apply syntax themes for clean readability.

JSON Formatter – Format & Beautify JSON is the ultimate tool for developers, designers, and data analysts who work with JSON every day.
Easily format, validate, minify, and visualize JSON data right on your iPhone or iPad — no internet required!

Key Features

Beautify & Minify JSON: Instantly format or compress JSON with a single tap.

Import & Export: Open .json files directly or paste from clipboard.

Tree View Explorer: View JSON data in an interactive, expandable tree structure with syntax highlighting.

Search JSON Keys & Values: Quickly find specific data fields in complex JSON structures.

Custom Themes: Choose from multiple syntax color themes (Xcode, Monokai, Solarized, GitHub).

Compare Two JSONs: Spot differences between two JSON objects line by line.

Share Formatted JSON: Export or share your beautified JSON text with others.

Smart Lazy Loading: Handle large JSON files smoothly without slowing down your device.

File Size Indicator: Know your JSON file size instantly as you type.

Built with SwiftUI: Smooth, modern, and lightweight performance optimized for iOS.

Perfect For

Developers working with APIs

Students learning data structures

QA testers verifying API responses

Anyone managing JSON-based configuration files

Why Choose JSON Formatter

Unlike simple online tools, this app is fully offline, fast, and privacy-friendly — your data stays on your device.
Whether you’re formatting, debugging, or comparing, JSON Formatter gives you full control in one elegant app.

Enjoy Format JSON App