FuaHub is a privacy-first web toolkit featuring 230+ online tools for PDF, images, text, and code. Unlike traditional tools that upload files to servers, FuaHub processes everything 100% locally in your browser using WebAssembly and Canvas API. Your files never leave your device. Features include PDF merge/split, image compression, HEIC to JPG, JSON formatter, and UUID generator. Fast, free, and works offline.

Hey Product Hunt community! 👋 I built FuaHub out of personal frustration: every time I needed to merge a PDF, convert an iPhone HEIC photo, or format a JSON payload, traditional online tools required uploading my files to unknown remote servers. For sensitive contracts, tax records, or personal photos, that always felt like an unnecessary privacy risk. So I built FuaHub — a 100% client-side web toolkit with 230+ online tools. ⚡ Key Features: • 🔒 100% Private: Everything runs locally inside your browser using WebAssembly & Canvas API. Your files NEVER leave your device. • 🌐 Offline-Ready: Once the page is loaded, client-side tools work even without an internet connection. • 🚀 Zero Friction: No login, no accounts, no watermarks, and no limits. From PDF merging and HEIC conversion to regex testing and password generation, FuaHub aims to be your privacy-first digital Swiss Army knife. I’d love to hear your thoughts! Which tool category do you find most useful in your daily workflow, and what tools should I build next? Thanks for checking out FuaHub! 🙌

the fact that everything runs locally in the browser with WebAssembly is honestly pretty impressive, especially for something like PDF merging that usually needs server uploads. really well executed idea.

FuaHub

230+ free online tools. Zero uploads, zero tracking.

230+ free online tools. Zero uploads, zero tracking.