Take the tool, or take the method.
Build notes & tutorialsEvery tool here started as a problem I had on a real deadline. In these breakdowns I show how each one is built — the techniques, the math, and the AI-assisted workflow behind it — so you can take the method and apply it to your own work, whether or not you ever use the tool itself.
Anatomy of a single-file tool
How I structure state, UI, and export inside a small tool so it stays fast to build and easy to ship.
Coming first →Rendering video as ASCII at 60fps
The canvas glyph atlas behind HAS ASCII — braille mode, edge characters, WebM export.
In progressGPU particles without a framework
Curl noise, mesh emission, and audio reactivity in raw WebGPU — the FLOWFIELD engine.
In progressHi. I'm Hector Augusto Santizo.
For more than fifteen years I've worked where design, animation, 3D, and software overlap — including a decade leading creative services at a major music company. These tools are built on deadline, not in theory.
HAS Tools is where I publish the things I wish existed: small creative tools, interactive experiments, and the lessons I learn while building them. Some people use the tools. Others use them as inspiration to build their own. Both are welcome.
One email when a new tool ships.
What it does, how it's built, and what to steal from it for your own work. If it doesn't leave you itching to build something, one click ends it.
No spam, no drip sequence. Just the tools.