JSONTech
Tools:JSON FormatterJSON ValidatorJSON ViewerJSON CompareJSON RepairJWT DecoderJSONPath Tester

About JSONTech.net

Last updated: March 2026

JSONTech.net is a free online workspace for fixing broken JSON and debugging API payloads. It combines 45 browser-based tools for formatting, validating, repairing, comparing, converting, and testing data, with most processing staying in your browser and optional proxying available only where API testing requires it.

Our Mission

Our mission is simple: make working with JSON easier, faster, and more accessible for developers worldwide. JSON has become the universal language of data exchange on the web, powering APIs, configuration files, databases, and countless applications. Yet many developers still struggle with everyday JSON tasks — formatting messy output, validating structures, converting between formats, or debugging complex nested objects.

We built JSONTech.net to be the fastest place to untangle JSON and API issues during everyday development. No more juggling multiple bookmarks, installing desktop apps, or writing quick scripts just to inspect a request body or clean up a malformed response. The goal is simple: paste the payload, reproduce the bug, and move on.

Our Principles

Every decision we make at JSONTech.net is guided by four core principles:

  • Privacy-first: Most of our tools run entirely in your browser, so formatting, validation, conversion, comparison, and repair stay local to your device. The main exception is API Explorer Proxy mode: if you choose it for a CORS-blocked request, the request URL, headers, auth, and body pass through our edge infrastructure to complete that live request and are not stored.
  • Always free: JSONTech.net is completely free to use with no paywalls, no premium tiers, and no feature restrictions. We believe essential developer tools should be accessible to everyone, from students learning JSON for the first time to senior engineers at enterprise companies.
  • Fast and lightweight: Our tools are designed to load instantly and process data in real time. There are no heavy frameworks to download, no splash screens to wait through, and no unnecessary bloat. You open a tool, paste your data, and get results immediately.
  • No signup required: We will never ask you to create an account, verify your email, or hand over personal information just to format some JSON. Every tool is immediately accessible with zero friction.

Our Tools

JSONTech.net offers a growing collection of 45specialized tools organized into intuitive categories:

Core JSON Tools

  • JSON Formatter: Beautify and indent JSON with customizable formatting options.
  • JSON Validator: Instantly validate JSON syntax and get detailed error messages with line numbers.
  • JSON Minifier: Compress JSON by removing whitespace for production use.
  • JSON Viewer: Explore JSON in an interactive tree view with expand/collapse and search functionality.
  • JSON Repair: Automatically fix common JSON syntax errors like trailing commas and missing quotes.

Conversion Tools

  • JSON to CSV / CSV to JSON: Convert between JSON and CSV formats for spreadsheet workflows.
  • JSON to XML / XML to JSON: Seamlessly transform between JSON and XML data formats.
  • JSON to YAML / YAML to JSON: Convert between JSON and YAML for configuration file workflows.
  • JSON to TypeScript: Generate TypeScript interfaces and types from JSON data.
  • JSON to HTML Table: Render JSON data as a formatted HTML table.

Advanced Tools

  • JSON Schema Validator & Generator: Validate JSON against schemas or generate schemas from data.
  • JSONPath Tester: Query JSON data with JSONPath expressions.
  • JSON Compare: Diff and compare two JSON documents side by side.
  • JSON Size Analyzer: Analyze the size distribution of keys and values in your JSON.
  • JSON Graph Visualizer: Visualize JSON structure as an interactive graph.
  • JWT Decoder: Decode and inspect JSON Web Tokens.
  • Mock Data Generator: Generate realistic sample JSON data for testing.

Encoding Utilities

  • Base64 Encode/Decode: Convert data to and from Base64 encoding.
  • URL Encode/Decode: Encode and decode URL-formatted strings.

Technology

JSONTech.net is built with modern web technologies to ensure a fast, reliable, and smooth experience:

  • Built with Next.js and React for a performant, SEO-friendly architecture.
  • Styled with Tailwind CSS for a clean, responsive design that works beautifully on any device.
  • Most tools execute entirely client-side, and API Explorer can optionally route requests through a Cloudflare edge worker when browser CORS blocks the target API.
  • Statically exported for instant page loads and global availability.
  • Dark mode support for comfortable use in any environment.

Explore Our Tools

Ready to get started? Browse our complete collection of JSON tools and find exactly what you need:

View all JSON tools →

Contact Us

We love hearing from developers who use our tools. Whether you have feedback, a feature request, a bug report, or just want to say hello, don't hesitate to reach out:

Thank you for choosing JSONTech.net. We're committed to building the best JSON tools on the web and making your development workflow smoother and more productive.