About RunTimeZero
We build small, focused utilities that run entirely inside your browser. No cloud processing, no accounts, no data stored on our end.
The problem we're solving
Most web tools are built around a server — your input goes up, gets processed, comes back down. That introduces latency, privacy exposure, and a business model that typically ends in a paywall. Modern browsers can do a lot of that work locally, and we think they should.
How the tools work
We build on browser-native APIs: WebGPU for GPU compute, WebWorkers for non-blocking tasks, WebAssembly for near-native performance. The result is software that runs at the speed of your own hardware with zero network overhead and nothing touching a server we control.
Who we build for
Anyone who wants a tool that just works, without signing up for anything or giving away their data in exchange. Students, engineers, designers — people who'd rather spend time using a tool than navigating the free tier of one.
What "RunTimeZero" means
Two things at once: the network latency we target (zero server round-trips) and the friction we impose on you (no account, no setup, no cost to start). Every tool is measured against both.
Principles
What guides our work
Deliberate scope
Each tool solves one problem well. We don't add features to justify a subscription tier.
Performance first
We choose the lightest path to the result. No framework that adds 200 KB for two components.
Privacy by architecture
The tools can't leak data they never receive. Local-first is a structural guarantee, not a policy.
No lock-in
Your output is a standard file you own. No proprietary format, no export gate, no dependency on us.