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JSON Viewer

Best Online JSON Visualizer - Fast, Modern & Free

What is JSON Viewer?

A friendly, fast tool to explore and present structured data. Upload JSON, YAML, or CSV and turn raw data into interactive trees, graphs, charts, and tables. Designed for developers, analysts, and data enthusiasts, it offers smart diagrams, theme customization, one-click export, and extensions for Chrome and VS Code. Optional cloud storage and AI helpers let you generate, repair, or sketch data quickly while keeping your files private unless you choose to save them.

Key features

Convert JSON, YAML, TOML, XML or CSV into interactive graphs in seconds.
Compare multiple JSON files side-by-side with a visual diff viewer.
Edit data directly from diagrams and sync changes instantly.
Use AI tools to generate, repair, or mock JSON quickly.
Install browser and VS Code extensions for seamless integration.
Export downloadable charts, tables, and diagrams without watermarks.