Add 30tools — 660+ free browser-based tools built with Next.js

[SH20RAJ]

What is 30tools?

30tools is an open-source collection of 660+ free online tools built entirely with Next.js 15 App Router. All tools run 100% client-side — no data leaves the browser.

Why it belongs here

• Built with Next.js 15 App Router (latest)
• 871 statically generated pages via generateStaticParams()
• Uses next/dynamic with ssr: false for lazy-loaded tool components
• Structured data (JSON-LD) + programmatic SEO across all pages
• Open source: github.com/SH20RAJ/30tools

Tool categories

PDF, Image, Video, Audio, Text, Developer (JSON, Base64, regex), Downloaders, Converters, SEO, Calculators, Generators, and more.

Tech highlights

• Two-tier component registry (RegisteredToolMount → tool-registry.tsx)
• Canvas API for image processing, pdf-lib for PDFs, Web Audio API for audio
• Zero server-side processing — everything runs in the browser
• Tailwind CSS + Radix UI components

Live: https://30tools.com