JSON Prettier – An Offline JSON Formatter Built with Rust and Tauri

Working with APIs often means dealing with compressed or minified JSON. While there are plenty of online formatters available, they come with some downsides—especially when handling sensitive data.

The Problem

• Privacy concerns when using online tools
• Requires internet access
• Ads, trackers, and slow loading times
• No control over how data is handled

The Solution

I built a desktop application that formats JSON entirely offline.

Tech Stack

• Rust: high performance and safety
• Tauri: lightweight desktop app framework
• React: for building the frontend interface

Development Highlights

• Rust-based backend for parsing and formatting JSON
• UI built with React and Tauri
• Support for opening and saving local files
• Packaged for macOS, Windows, and Linux

Results

• ~10MB binary (compared to 100MB+ with Electron)
• Fast startup and performance
• No internet dependency
• Full control over data, no privacy concerns

Repository

GitHub: https://github.com/rebase/json-prettier

Feedback and contributions are always welcome! 🙌