JSONCraftEdit - Json formatter

JSON Formatter & Editor – Supports real-time syntax validation, smart error correction, auto-fix, and one‑click formatting. Automatically generates model code 6 languages

JSONCraftEdit – Your JSON Editing & Formatting Assistant

A JSON formatter and editor that supports real‑time syntax validation, smart error correction, auto‑fix, and one‑click formatting. Automatically generates model code in 6 languages (Swift, Java, Python, etc.) while protecting your data privacy.

Designed for developers, data analysts, DevOps engineers, and QA testers – providing a clean, efficient, and secure JSON processing experience.

Core Features

▸ Real‑time editing & validation

Syntax highlighting for clear readability

Real‑time JSON syntax validation – catch errors instantly

Precise error location to speed up fixing

▸ Smart error correction & auto‑fix

Automatically detects and fixes 12 common format errors

Converts Chinese punctuation to English punctuation

Removes trailing commas, adds missing quotes

Offers both conservative and aggressive correction modes

▸ Formatting & minification

One‑click beautify JSON with 2‑space, 4‑space, or Tab indentation

Quickly compress into minimal format

Automatically sort object keys alphabetically

▸ Model code generation

Supports Swift, Java, Kotlin, Python, C#, and Go

Automatically identifies data types and nested structures

One‑click copy generated code

▸ File management

Import / export JSON files

Auto‑save drafts to prevent data loss

History management for quick recovery of previous content

▸ Privacy & security

Runs completely offline – no data is ever uploaded

All data stays only on your local device

No user information collection, no behaviour tracking

▸ Customisation

Three themes: Dark, Light, or Follow System

Adjustable font size (10–24 pt)

Flexible indentation settings

Use cases

API debugging and testing

JSON data formatting and beautifying

Rapid data model code generation

Configuration file editing

Data analysis and processing

Why choose JSONCraftEdit?

Powerful JSON editing, error correction, and auto‑fix capabilities

Fully offline operation – privacy protected

Clean and elegant interface design

Smooth native iOS experience

Continuous updates and improvements

Download now – the powerful JSON editing & formatting tool!