The Ultimate Developer Toolkit
Explore our comprehensive suite of free, browser-based tools designed to streamline your development workflow. Fast, secure, and privacy-focused.
As developers, we constantly find ourselves needing quick utilities to format data, decode strings, or test APIs. Often, this means juggling multiple websites, downloading desktop applications, or writing throwaway scripts. FormatJson was built to solve this problem by providing a unified, high-performance toolkit right in your browser.
Because all processing happens locally on your device (with the exception of API requests you explicitly make), your sensitive data never touches our servers. This ensures maximum privacy and security for your workflow.
Resources & Help
Available Tools
JSON Editor & Formatter
A powerful tool to format, validate, and edit JSON data. Features include tree view, text view, JSONPath evaluation, and schema validation.
XML Formatter
Easily format, beautify, and minify XML data. Includes syntax validation and XML to JSON conversion capabilities.
UUID Generator
Generate Universally Unique Identifiers (UUIDs) instantly. Supports v1 and v4 formats, bulk generation, and customizable output.
Base64 Encoder/Decoder
Securely encode and decode Base64 strings directly in your browser. Fully supports UTF-8 encoding for emojis and special characters.
User Agent Parser
Parse User Agent strings to extract browser, operating system, device type, and engine information for debugging and analytics.
IP Lookup
Retrieve detailed information about any public IP address, including estimated physical location, ISP, ASN, and time zone.
GraphQL Client
Explore GraphQL schemas, write queries with auto-completion, and test endpoints securely from your browser.
Why Choose FormatJson?
🔒 Privacy First
No server-side processing. Your data stays on your machine.
⚡ Lightning Fast
Built with modern web technologies for instant results.
🛠️ All-in-One
Everything you need in one clean, ad-free interface.