FloorGrid

A lightweight floor plan sketcher built for one specific person, my father. He wanted to plan the layout of his future farm house but kept reaching for paper and pencil. This is the digital version of that pencil, running entirely in the browser as a single HTML file.

Existing floor plan tools are either too complex or locked behind accounts and subscriptions. What was needed was something immediate: open it, pick a wall color, and start drawing. There is no learning curve, no sign-up, and no internet connection required.

Built on HTML5 Canvas with vanilla JavaScript. The canvas works like graph paper where each cell is a pixel you paint by dragging. Wall thickness is locked in at the start to keep proportions consistent. A flood-fill tool handles room coloring once the walls are closed. The entire project exports as a clean PNG.

I ended up using it to sketch my own logo.