Hey Product Hunt! 👋 I'm Merlin, the maker of AdapterCheck. I built this tool to solve a surprisingly annoying problem: trying to figure out travel adapters without having to read a 2,000-word SEO blog post. Every time I travel internationally, I just want to know two things immediately: Will my plug physically fit into the wall? and Will the voltage difference fry my laptop charger? Instead of instant answers, search engines usually give you bloated travel blogs filled with pop-ups and display ads. So, I built AdapterCheck.com. It’s a zero-fluff, lightning-fast matrix backed by data for 195 countries. You just pick your origin and destination, and it gives you a giant "YES" or "NO" with the exact electrical math behind it. 🛠️ The Tech Stack (For the builders here): I wanted this to be a pure experiment in raw speed and performance. The Code: Built with SvelteKit and strictly Statically Site Generated (SSG). The Styling: Raw Tailwind CSS. Zero heavy UI libraries, zero JavaScript bloat. The Infrastructure: Hosted on a self-managed Hetzner VPS via Coolify. Privacy-First: I use self-hosted, cookie-less analytics (Umami), which means there are zero tracking cookies and absolutely no annoying GDPR consent banners. 💸 The (Non-Existent) Business Model: Full transparency: You will see "Buy on Amazon" buttons on the results pages to complete the UX, but they are currently just raw, untracked links. I haven't even applied for the Amazon Affiliate program yet! I just wanted to build the absolute fastest, most helpful version of this tool first. If people actually use it, I'll figure out the affiliate stuff later. I’d love for you to test out your next travel route. Let me know what you think of the UX, or if you spot any wild edge-case countries I need to tweak the logic for! I'll be hanging out in the comments all day to answer questions. ✈️🔌

AdapterCheck

Zero-fluff travel adapter & voltage checker

Zero-fluff travel adapter & voltage checker