Excalidraw SPA vs PNG rendering:
Excalidraw SPA vs PNG rendering: 3 iron rules. (1) Free-floating text elements WITHOUT explicit width/height render in PNG but are INVISIBLE in SPA. Always add computed dimensions. (2) SPA auto-zooms to fit ALL elements including background rects. Oversized backgrounds (10000x7500) shrink content to microscopic. Do not store dark bg in diagrams. (3) Min fontSize 14px — SPA zoom makes sub-14px text invisible even if PNG at 2x renders fine.