Hey Product Hunt community! 👋 I'm Muffin, creator of PDFSeal. Ever needed to compress a PDF for a visa application, job portal, or tax filing, only to realize you just uploaded your private passport scan, financial statements, and home address to an unknown cloud server? Most online PDF tools are cloud black boxes with arbitrary file limits, watermarks, and paywalls. We built **PDFSeal** with a strict zero-upload invariant: 🔒 **100% Client-Side**: Everything runs directly inside your device's browser memory (RAM) via WebAssembly & JavaScript. Zero bytes are uploaded to the cloud. ✈️ **True Offline & Airplane Mode**: Disconnect your Wi-Fi or turn on Airplane mode—it continues to run flawlessly as an installable PWA. 🎯 **Target-Size Bisection**: Need a document strictly under 2.0 MB for government portals? It mathematically converges to your target size without trial and error. 🛡️ **Physical Redaction**: Actually strips sensitive text and underlying vectors from document bytes rather than just slapping a black rectangle over them. ⚡ **Automated Pipelines**: Chain multiple steps (e.g. Redact → Compress → Watermark) into an automated one-click assembly line. It's 100% open-source (AGPLv3), free, and has zero tracking. I’d love to hear your thoughts, feedback, and feature requests. What’s your biggest PDF headache? 🦭

PDFSeal

Privacy-First, Zero-Upload PDF Toolkit in WebAssembly

Privacy-First, Zero-Upload PDF Toolkit in WebAssembly