About jsontools.online
jsontools.online was built with a single mission in mind: to provide developers with a fast, beautiful, and absolutely secure set of tools for daily tasks.
Why we built this
As developers, we constantly need to format JSON, decode JWTs, check diffs, and validate data. However, most online tools have two major flaws:
- Privacy Risks: Many tools send your sensitive code, API keys, or proprietary data to their backend servers for processing.
- Poor UX: They are often cluttered with ads, have outdated designs, and lack modern features like a Command Palette or Monaco Editor integration.
Our Philosophy
We believe that your data is yours. Period.
That is why jsontools.online is architected to be 100% Client-Side. Whether you are masking sensitive credit card information, formatting a massive JSON payload, or converting SQL to JSON, every single operation happens in your local browser environment.
Key Features
- Privacy First: No data leaves your browser. No server API calls for processing.
- Premium IDE Experience: Powered by Monaco Editor (the core of VS Code) for syntax highlighting, code folding, and real-time linting.
- Ultra-Fast Workflow: Use ⌘ K to open our Command Palette and instantly jump between tools.
- Offline Capable (PWA): Install jsontools.online as a Progressive Web App and use it even when you have no internet connection.
- Snippet Library: Save your most used configurations and JSON templates locally via IndexedDB.
Open Source & Community
We love the developer community. If you have feature requests, bug reports, or want to contribute, feel free to reach out. We are continuously adding new tools and refining the experience to make it the only utility suite you will ever need.