JSON Viewer

About JSON Viewer

JSON Viewer turns structured data into an interactive graph instead of a wall of nested brackets. It accepts JSON, YAML, XML, CSV, TOML, TOON and Mermaid and renders them as navigable diagrams, tables and charts, which is aimed at the specific moment where reading a payload by eye stops working — a deeply nested API response, a Kubernetes manifest, an infrastructure config where the shape matters more than any individual value. The use-case pages the product publishes are a good guide to who it is for: API design, system design, CI/CD and DevOps, network and infrastructure, JSON Schema, JSON comparison and JSON-LD. Beyond viewing, the editor supports editing the document directly from the diagram, comparing two payloads to spot differences, applying themes, and exporting in one click. Distribution is through the browser and the editor together: there are Chrome and VS Code extensions alongside the web app, so a payload can be visualised where it is encountered rather than copied into a separate tab. A set of free utilities sits around the core product — dummy JSON generation, format conversion, a JSON fixer, a size calculator, a package.json health checker and a prompt generator. The paid tier is priced low enough to be an impulse purchase for an individual developer rather than a team procurement decision.

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