Prozollo is a proposal generator that lives in one HTML file. Buy it once, download it, double-click it. It runs in your browser, offline. No account, no subscription, no server, nothing to install. Three art-directed themes, portrait or landscape, 22 typefaces built in, live contrast checking, drag-reorder sections, spacer pages, and a PDF at the end that looks like a studio made it. No licence check, no activation, no expiry. It works the day you buy it and the same way in ten years.