Chi Sheu, P.E.

Civil Engineer, building tools, fixing things.

A Small Nod to USA 250

God bless America. It's pretty awesome here. You should visit if you haven't been.

The Day Job

I work in transportation construction and maintenance. Most of these tools started as a quick fix for something tedious or error-prone in my own workflow — a report that took too long to fill out, a file format nobody wanted to deal with by hand.

The Rest of It

Outside of work I tinker — repairing things, automating things, occasionally posting some of it on YouTube as SuperWhizy. This hub is mostly an extension of that: figuring out a problem and building something that actually solves it, rather than something that just looks finished.

How These Tools Handle Your Data

"Your files never leave your browser" was true and meaningful when this hub had a couple of tools. Past 30, it stopped being true for all of them — some now run real-time, some lean on a server I control for the heavier lifting. Rather than keep one blanket claim that's only sometimes accurate, every tool on the hub is now tagged with one of three labels, so you know what you're getting before you click.

🔒

Local

Your files and data are processed entirely on your own device. Nothing you upload or enter is sent anywhere.

☁️

Server-Assisted

Some of your data reaches a server I control — usually for storage, heavier compute, or a database lookup the browser can't do alone.

🌐

Live / Networked

Real-time or multiplayer by design — shared state between people or devices is the whole point of the tool.

One clarification: "Local" means your uploaded or entered data never leaves your device — it doesn't mean the page makes zero network requests at all. A tool can still load its own code from a CDN or pull a background map tile from a mapping provider and still be Local; what matters is whether your data goes anywhere. Loading a script is not the same as uploading a file.

Support the Lab

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