JSON Viewer
Visualize Data into interactive diagram in seconds
Free67 impressions#881 of its week
JSON Viewer visualizes JSON, CSV, XML, YAML, TOML and Mermaid files as interactive diagrams.
- for
- Developers, data analysts and visualization enthusiasts.
- pricing
- freemium
Key features
- Multi-format support — Upload JSON, YAML, XML, CSV, TOML or Mermaid and view them as interactive graphs.
- Visual diff viewer — Compare multiple JSON files side-by-side with a graphical diff.
- Edit from diagram — Search and edit JSON values directly within the visual graph.
- AI-powered diagram generation — Generate diagrams or dummy JSON using built-in AI assistance.
- Chrome & VS Code extensions — Visualize JSON instantly in the browser or editor without copying.
- Custom themes & node colors — Personalize colors, themes and node styles for clearer diagrams.
- Secure cloud storage — Data is stored only when manually uploaded, ensuring privacy.
- Mobile apps — Android and iOS apps let you view, edit and share diagrams on the go.
Use cases
- Debug API responses by visualizing raw JSON payloads.
- Spot differences between configuration files with the visual diff tool.
- Create and share interactive Mermaid diagrams for documentation.
- Edit large JSON structures directly from a graph to speed up data cleanup.
- Generate quick visual overviews of CSV or XML data for analysis.
JSON Viewer pricing
- Free$0/monthUpload & process small files · Chrome/VS Code extensions · Unlimited downloads · Tables, charts & essential tools
- Pro$2.49/month/monthAd-free experience · Full compare & edit capabilities · Unlimited diagrams & custom themes · API access and large-file support
JSON Viewer FAQ
What is JSON Viewer and what does it do?+
JSON Viewer is a web tool that lets you upload JSON, CSV, XML, YAML, TOML or Mermaid files and instantly visualize them as interactive diagrams.
Can I customize the theme of my JSON visualizations?+
Yes, you can customize node colors, apply personalized themes and adjust visual styles directly in the editor.
What types of visualizations can I create with JSON Viewer?+
It supports tree views, tables, charts, and custom diagrams, including Mermaid flowcharts and sequence diagrams.
Is my data secure?+
Data is stored only when you manually upload it, and the service emphasizes privacy with no hidden storage of your files.
Is there an Android or iOS app for JSON Viewer?+
Yes, the Pro plan includes Android and iOS apps that let you view, edit and share diagrams on mobile devices.
How do I cancel my paid plan?+
You can cancel your subscription through the account settings; contact support for assistance if needed.
Summarized by DevHunt from jsonviewer.tools · Oct 4, 2026. Details may change; check the official site.
