A free, fast, and clean web-based tool to format, validate, and minify JSON. No sign-ups, no ads, and no distractions — just paste your JSON and get instant results.
JSON OS Alternatives
JSON OS is described as 'Free JSON & Markdown workbench — format, validate, diff, chart, generate types, test APIs. Runs 100% in your browser, no signup, no uploads' and is a JSON Viewer in the development category. There are more than 50 alternatives to JSON OS, not only websites but also apps for a variety of platforms, including Mac, Windows, Google Chrome and SaaS apps. The best JSON OS alternative is JSON Crack, which is both free and Open Source. Other great sites and apps similar to JSON OS are Boop, 10015.io, fx and JSON BANG!.
Alternatives list
Cost / License
- Free
- Open Source
Platforms
- Online
- Self-Hosted
Visual JSON Editor is a JSON schema draft v4 based file editor for Windows: When opening a JSON file, the application auto-generates an editor GUI based on the provided JSON schema. The goal is to make JSON editing more effective and easier for users.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Windows
Free and privacy-first online tools for developers, students, and creators — including IP lookup, Base64 decoder, JSON formatter, crontab generator and more.
Cost / License
- Free
- Proprietary
Platforms
- Online
+2
quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and more. Customize online with advanced options, or download a command-line tool.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Online
- Xcode
- Visual Studio Code
- Microsoft Visual Studio
+1
JSON Formatter Pro is a browser extension that helps you quickly format and validate JSON so it’s easy to read and debug. It prettifies/minifies JSON, highlights syntax, and makes it simple to inspect large JSON responses while working in APIs, web apps, and dev tools workflows.
+6
Online JSON Formatter and JSON Validator will format json data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON.
Cost / License
- Free
- Proprietary
Platforms
- Online
Online Tools like Beautifiers, Editors, Viewers, Minifier, Validators, Converters for Developers: XML, JSON, CSS, JavaScript, Java, C#, MXML, SQL, CSV, Excel.
Cost / License
- Free
- Proprietary
Platforms
- Online
+1
HtmlStrip is a free tool designed for web developers who need a quick and simple solution for things in their day to day work.
Cost / License
- Free
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
A powerful online JSON formatter, editor and validator with multiple visualization modes including code, tree, table and graph views, making JSON debugging and manipulation effortless.
Cost / License
- Free
- Proprietary
Platforms
- Online
+2
Online Tools like Beautifiers, Editors, Viewers, Validators for Developers: HTML, XML, JSON, CSS, JavaScript.
Cost / License
- Free
- Proprietary
Platforms
- Online
A free web app providing 200+ online tools for developers, including JSON formatters, PDF mergers, code converters, data generators, and more—no signup required.
Cost / License
- Free
- Proprietary
Platforms
- Online
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