About
Runtime Hub is a project by RuntimeZero — a collection of free, privacy-first browser tools built to solve real tasks fast, with zero servers and zero data collection.
Most web tools make a quiet trade: you give them your data, they give you a feature. The data gets stored, analyzed, potentially sold. The free tier disappears behind a paywall. You didn't sign up for any of that.
We built Runtime Hub because modern browsers are powerful enough to do the heavy lifting locally — no server needed. That means we structurally cannot collect your data, not just that we pinky-promise not to.
A tool that doesn't receive your files can't leak them. Privacy here is an architectural guarantee, not a policy.
Every tool in the Runtime Hub runs entirely inside your browser tab using modern Web APIs. Your files are processed in-memory — when you close the tab, everything is gone. Nothing touches our infrastructure.
We use HTML5 Canvas for image processing, WebAssembly for near-native performance, WebWorkers for non-blocking tasks, and the browser's native URL and JSON APIs for data cleaning. The compute is yours.
We don't promise to not look at your data. We build so there's nothing to look at in the first place.
Each app does one thing extremely well. No feature bloat to justify a pricing tier.
Lightest path to the result. No round-trips, no queues, no waiting on someone else's server.
No server costs means no reason to charge. These tools are and will remain free for personal use.
People who want tools that just work. No sign-up, no tutorial, no "upgrade to unlock." Students, developers, designers, journalists, photographers, anyone who'd rather spend time on the task than on the tool.
Follow us on Instagram (@run.time.0) or TikTok (@runtimezerohub) to see what we're building next.