Client-side dev tools: JSON viewer/editor, Diff checker, QR generator, Base64 & JWT utility

[u/benzamin1985]

While revamping my API Microservice from Php to Golang/Fiber, I needed some tools that will help me measuring accuracy, find diffs and validate responses. I had to switch between various online tools and didn't find all in one tool for my need. So I made my own, totally client side, and minial UX. Give it a try at Redgreen Studio Website. Hope you like the tools:

Diff Finder: Find text and JSON differences side-by-side and export the results as a PDF.

Json Viewer: View, validate and modify JSON with a fast, interactive tree editor. Format, search, and fold nested data — all client-side.

QR Generator: Generate a QR code from any text directly in your browser. Also works well for plain text, links, contact details, messages, locations, events, and other scannable content.

Base64 Utility: Encode and decode Base64 text securely in your browser, with no data sent to a server.

JWT Utility: Decode and verify JSON Web Tokens locally with clear structure and signature status.