Online Dev Tools - Free Developer Utilities
Free online developer tools: JSON formatter, JWT decoder, Base64 encoder, Unix timestamp converter, regex tester, and more.
Next.js 14 · TypeScript · Tailwind · Open Source
Background
Developers often need quick, free, in-browser tools without installing anything or sending data to third parties.
Responsibilities
Build a set of single-page dev tools with good UX and SEO so each tool is discoverable and linkable.
Achievements
- Implemented 15+ tools (JSON, JWT, Base64, cron, regex, diff, SQL formatter, etc.) as separate Next.js pages with client-side-only processing.
- Added per-page metadata and sitemap for SEO; kept bundle small and loading fast.
- Published as MIT so others can reuse and extend.
Outcomes
Free, fast dev tools site with strong SEO and no backend; each tool is shareable and works offline-style.