VidZap: Turnkey Video Downloader Script (Node.js & Vanilla JS

Hey Product Hunt! 👋 I'm excited to share the architecture of a full-stack project I just finalized: VidZap, a turnkey web video downloader script. When building this, my goal was to create a reliable and secure utility system. It uses a decoupled structure: a lightweight, single-page Vanilla JS frontend that handles link inputs on a crisp dark UI, connected to an asynchronous Express.js Node backend core. To eliminate command-injection vulnerabilities common in web extractors, I strictly implemented `execFile` to sandbox incoming URL queries securely. It also comes out of the box with a clean `.env` architecture, allowing buyers to seamlessly drop in RapidAPI credentials as an optional cloud-processing fallback. I have completely unbranded the source package, cleaned out local folders, and bundled it with step-by-step setup guides to deploy globally on VPS hosts or edge servers. I'm live today offering a special launch package on Gumroad. I'd love to hear your thoughts on this architecture or answer any questions about the backend logic below! 👇