Plan → Sketch (offline)

How to start

The drawing area on the right is ready immediately — you can trace on a blank grid with no photo loaded at all, or drop a photo/scan/PDF into it first for reference.
If you loaded a photo, click "Set scale", then click two points on a wall of known length and enter that length, so distances match the real building. On a blank grid, a default scale is already active — no calibration needed.
Type a label and pick a subarea for the first area you'll trace.
Move the cursor (arrow keys or mouse) to whatever corner you want to start at, then press D — that exact spot becomes A0 (0,0) for the whole project, and also plants the POB for this first shape.
Move the cursor to the next corner and press D again — repeat until you're back at the POB and press D once more to close the shape. Press V anytime to snap the cursor onto the nearest existing corner.

The cursor (crosshair) moves with the arrow keys or the mouse — always visible, even before you start a shape. Blue = pen up, red = pen down. Press D to plant the POB and again at each corner; landing back on the POB and pressing D closes the shape automatically. Press V to snap the cursor onto the nearest corner from this shape or any already-finished one — press again to cycle to the next-nearest. Esc cancels the shape in progress. Backspace undoes the last placed point (or edits a typed number if you're mid-entry).

Bows (curved walls): position the cursor for a straight (non-diagonal) step, type the bulge in feet, then press B instead of D — a leading - on the typed number flips which side it bulges toward. A bow can also close the shape, the same way D does. Without a typed number first, B does nothing.

Drawing mode (top right, next to File name): Tyler snaps everything to whole feet, matching standard property sketches. Precision keeps one decimal place (0.1 ft) instead — hold S to fine-tune the last bit of a wall before committing it, any time while tracing, not just at the POB. Type a decimal number (e.g. 3.4, using .) the same way you'd type a whole one. The orange alignment guide matches within 0.1 ft in Precision mode rather than requiring an exact match.

Hold Z + scroll/trackpad to zoom (stays centered on your cursor) — plain scrolling won't zoom by accident. Pan by right-click-dragging or holding Space and dragging. Type a number then press an arrow to jump that many feet in one step. Holding S while positioning a new POB (pen up) moves in 0.1ft steps for fine alignment — in Tyler mode, movement is otherwise always whole feet once a shape is being drawn. Left click also moves the cursor there and commits in one step. Zooming/panning never changes the scale.

File name

Drawing mode

Label

Subarea

Floor

Photo or PDF

Drop a photo/scan or PDF, or click to choose one (optional — the grid below is ready now)

PDF support isn't set up yet — save pdf.min.js and pdf.worker.min.js in this same folder as this HTML file (one-time download, then it works offline forever after). Until then, convert this PDF's page to a PNG/JPG and drop that in instead.

Scale

100% Show picture

2. Area table & VECT strings

Add from an existing vector string

Label

Subarea

Floor

Label/Subarea above are only used for a single plain vector string. Paste a full multi-subarea sketch string (e.g. BAS(R10D8CR20D15L20U15)FGR(R20D10CR15D8L15U8)) and each named block is added on its own, using its own code — Floor still applies to all of them.

Vector string

3. Report (Legal size, printable)

One page per floor, each sized for an 8.5"×14" legal sheet. "Print / Save as PDF" opens your browser's normal print dialog — choose "Save as PDF" there for a multi-page file, or print directly (each floor lands on its own printed sheet).

How to start

Vector mode notes

2. Area table & VECT strings

3. Report (Legal size, printable)