JSON Viewer

JSON Viewer

JSONViewer.tools
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About

API Tester is a completely free mobile app available on iOS, Android, macOS, and watchOS. It is a functional API testing tool that allows users to complete compound tasks on any device. - Test any API on the go: REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS. - GET, POST, PUT, PATCH, DELETE, etc. HTTP request methods are supported. - Perform the API calls with any kind of request data encoding and transfer type. - Import collections from Swagger, Postman, and YAML, or import requests using cURL, as well as export created requests via link or cURL. - Use a powerful GraphQL editor with full-scale experience. - WebSocket testing tool is available: handles connection and message exchange via WS or WSS. The API Tester mobile app allows you to get the job away from your workstation. Save time, work from anywhere!

About

jsonviewer.tools — a powerful and interactive JSON visualization platform that helps users easily view, analyze, and explore complex JSON data. Graph & Tree Visualization – Interactive 2D and compact graph modes with zoom, pan, and hover link visualization. Table View for CSV – Upload CSV files and view them in a clean, sortable table format. 3D Visualization – External 3D JSON graph visualization option. File Support – Upload and visualize JSON, CSV, and YAML files. Interactive Graph Export – Double-click any JSON key to generate a graph for that key and export it as PNG. Direction Control – Change the graph direction (horizontal/vertical). Theme Customization – Switch between light/dark or custom color themes. Comparison Tool – Compare two JSON files side by side. Dummy JSON Generator – Quickly generate sample JSON for testing or demo use.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Programmers and developers who design, debug, and test APIs

Audience

Developers, data analysts, and software engineers who work with JSON, CSV, or YAML data. Ideal for API testers, backend engineers, data scientists, and MongoDB users who need to visualize or debug complex data structures. Also beneficial for software companies, SaaS teams, and educational institutions teaching or managing structured data.

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Completely free
All features are available for free
Free Version
Free Trial

Pricing

$1.99/month
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 4.5 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • API Tester is free. The best GraphQL editor I ever saw. It gives the option to run literally any type of API. Easy import options. Pleasant user experience overall. Learning how to use the app wouldn't take too long.
  • Application is pretty simple, straightforward and works well. Validating Restful and SOAP APIs, WebSocket applications, as well as GraphQL applications has been a good experience using API Tester. All the underlying challenges that come to mind for testing backend applications are well served. What is more important - it's completely free and all features are available without any fees. This mobile app increased my productivity, and I can test APIs from anywhere on the planet using only a mobile device.

Cons

  • Not optimal for fully automated testing, but it would be unfair to demand this from a mobile solution.
  • The only cons is the lack of a desktop version. I think it could replace my other desktop alternatives.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

API Tester
Founded: 2020
United Kingdom
apitester.org

Company Information

JSONViewer.tools
Founded: 2024
India
jsonviewer.tools/

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Categories

Categories

API Testing Features

Functional Testing
Fuzz Testing
Load Testing
Penetration Testing
Runtime and Error Detection
Security Testing
UI Testing
Validation Testing

Integrations

JSON

Integrations

JSON
Claim API Tester and update features and information
Claim API Tester and update features and information
Claim JSON Viewer and update features and information
Claim JSON Viewer and update features and information