Fast, privacy-first developer utility tools running 100% in your browser
Stage
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Founded
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Based in
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Pricing model
Freemium
Free
Pricing
Free plan includes upload and process small files, Chrome/VS Code extension, unlimited downloads, and visualization with tables and charts. Pro plan costs $2.49/month (monthly) or is available yearly, includes ad-free experience, compare and analyze data, edit JSON from diagrams, unlimited diagrams
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Key features
Interactive tree view with expand/collapse and color-coded syntax highlighting
Side-by-side JSON comparison with visual diff viewer
AI-powered JSON diagram generation from natural language
Convert JSON data into dynamic charts and graphs
Chrome extension for instant visualization on any webpage
Multi-format support for YAML, XML, CSV, TOML, TOON and Mermaid
REST API client with diagram visualization of responses
Customizable themes and multi-node color customization
Export diagrams as images and download graphs
JSON formatter and beautifier with multiple indentation options
Real-time JSON syntax validation with error line detection
JSON to TypeScript interface generation
Interactive tree view with JSON path copying
XML formatting and validation
JSON to Zod schema generation
JSON diff and semantic comparison
JWT decoder and token inspection
JSON to Rust Serde struct generation
What makes it different
Supports 6+ data formats including JSON, YAML, XML, CSV, TOML and TOON in one tool
AI-powered assistant to generate and transform JSON using natural language commands
Chrome and VS Code extensions for seamless workflow integration
Privacy-first design with data stored only upon manual upload
Native mobile apps for Android and iOS for on-the-go visualization
Complete offline functionality for air-gapped environments
Instant processing with zero network latency
Privacy-first architecture with zero data logging
Multiple developer format outputs from single input
JSON Viewer
Nazamos