JavaScript Tools

JavaScript Tools

Privacy-first developer tools that run in your browser.

JSTools.Space is a free collection of privacy-first developer utilities for formatting code, inspecting JSON and tokens, generating secure values, encoding data, and creating test fixtures. No account or setup is required, and most processing happens locally in the browser.

Side projects · Development · No-code

Use Cases

27 focused developer utilities
Local browser-based processing
No account or registration
Free to use
Formatters for JSON, HTML, CSS, XML, and Markdown
Password, API key, UUID, token, salt, and nonce generators
JWT decoder and hash generator
JSONPath and GraphQL query utility
Diff viewer and live HTML editor
Configurable dummy data library
Light and dark themes
Responsive keyboard-friendly interface
Documentation for every tool
Chrome JSON Inspector extension
Windows, macOS, and Linux JSON desktop application

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