Hey 👋 Maker here. Quick context on what this is: OToolbox is a set of browser-based utilities where all processing happens on your device. Nothing gets uploaded anywhere. The technical choice behind it is simple — most of these operations (resizing images, formatting JSON, generating PDFs) don't actually need a server. Your browser can handle them natively. So why send your files to someone else's computer? So I made a set of tools where everything runs in your browser. Your files never leave your device. There's no backend processing your images or reading your JSON, it's all JavaScript running locally. Some highlights: - Image Resizer with presets for every social platform (Instagram, Facebook, YouTube, etc.) - Background Remover that runs an AI model directly on your device - URL Shortener with custom aliases, UTM builder, A/B testing, and expiration - JSON/XML/SQL/CSS formatters for devs - PDF tools (text-to-pdf, images-to-pdf, word-to-pdf) It's free, no signup required, and I have no plans to add a paywall. I fund it through minimal, non-intrusive ads. Would love to hear what tools you'd like to see added next — I'm actively building based on user suggestions. Happy to answer any questions about the tech stack too (Next.js 14, Vercel Edge, client-side WASM for the AI model). Thanks for checking it out! 🙏

OToolbox

Free browser-based tools - no uploads, no signups, no limits

Free browser-based tools - no uploads, no signups, no limits