IN THE FIELD GUIDE
Jsonviewer
jsonviewer.tools
JSON Viewer is a web-based tool designed for developers, analysts, and data professionals to explore, format, compare, and visualize JSON and other data formats into interactive graphs, charts, tables, and diagrams. It supports multiple data formats including JSON, YAML, XML, CSV, TOML, TOON, and Mermaid, offering features like AI-powered diagram generation, REST API testing, and secure cloud storage.
THE PRODUCT, BEYOND THE PITCH
Editorially reviewed · Sources checked Oct 7, 2026
A good fit for
- Developers, data analysts, and visualization enthusiasts who need to make JSON data more intuitive and accessible.
Know the limitations
- Free plan supports only small file uploads and processing.
What you can do
- Visualizing and analyzing JSON and other data formats for developers and data professionals.
- Comparing multiple JSON files side by side to spot differences and understand changes between versions.
Features
- Compare JSON graphically with an intuitive visual diff viewer to spot differences between versions.
- Edit JSON directly from diagrams using a powerful search bar to find and update nodes in the visual graph interface.
- AI-powered generation of diagrams and JSON data, including generating JSON from images or creating dummy JSON.
- Supports multiple data formats including JSON, YAML, XML, CSV, TOML, TOON, and Mermaid for versatile data visualization.
- Interactive REST API client with visualization to send API requests and see structured responses in diagram form.
Integrations
- REST API testing with diagrams integration to send API requests and visualize structured responses.
Platforms & data export
Not confirmed yet.
THE COST FOR YOUR TEAM
Go beyond the starting price.
Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.
Cheapest fit for 1 person, all 1 tools
$0.00/month
$0.00 a year on these plans.
| Tool / plan | Monthly | Per year | What this assumes |
|---|---|---|---|
FreeCheapest fit Flat subscription | $0.00 | $0.00 | Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider. |
Pro Flat subscription | $2.49 | $29.88 | Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider. |
Enterprise Flat subscription | By quote | — | Priced by quote — ask the provider for a figure. Contact the provider for a quote. |
A practical workflow
- Use the Editor View by replacing <yourjsonurl> in the URL format to fetch, view, and edit JSON data with an interactive tree and graph.
- Use the Widget (Iframe) View to generate an embeddable graph visualization from a JSON URL with customizable colors and styling.
- Embed the generated graph in a website using an iframe with customizable width, height, and frameborder.
Based on the sources below. Editorial review does not imply hands-on product testing.
Alternatives to explore
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