DevToolBox

75+ browser-only dev tools — no signup, no tracking

3 followers

75+ browser-only dev tools — no signup, no tracking

3 followers

75+ developer tools running entirely in your browser. JSON formatter & diff, Base64, regex tester, color tools, CSS utilities, and more. No signup, no server-side processing, no ads. Bilingual (EN + JP). Free forever.

Free

Launch tags:Productivity•Software Engineering•Developer Tools

Launch Team

Customer.ioAutomate Messaging Everywhere — Startups Get 12 Months Free

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Hunter

📌

Hey Product Hunt! 👋 I built DevToolBox because I was tired of pasting sensitive data into random online tools that send everything to their servers. DevToolBox runs 100% in your browser — your data never leaves your machine. No accounts, no tracking, no ads. What started as a JSON formatter grew into 100+ tools: regex tester, Base64 encoder, color contrast checker, CSS unit converter, hash generator, and much more. A few things that make it different: • Privacy-first: Everything runs client-side. Zero server-side processing. • No signup required: Just open and use. • Bilingual: Full English + Japanese support (the only dev toolkit with native JP). • Modern UI: Dark mode, responsive, keyboard shortcuts. Built with Next.js + Tailwind CSS, deployed on Vercel. Would love your feedback! What tools would you like to see added?

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4mo ago

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