The plan sketch in the wall-framing takeoff lets you trace over a scanned or photographed plan: set the scale from one known distance, slide it into place, straighten a crooked scan. Until today, a reload threw the picture away and you repeated all three steps, while the walls you had drawn were kept.
The picture is now stored with its place, scale and turn in your browser's local storage. It is shrunk to at most 1600 px as a JPEG first so it fits; if the browser still refuses the size, the picture just isn't kept, as before. Nothing is uploaded: the page has no server, and "Remove picture" deletes the stored copy.
A browser test (eval-sketch-click.mjs) uploads a picture, scales and straightens it, reloads, and checks the same width and angle come back, then that a removed picture stays gone after another reload.
Try it: <https://marisstella.app/>, wall-framing takeoff.