Concepts
Vector blueprint
A blueprint that keeps its PDF page, so it can print as lines instead of pixels.
A vector blueprint is a blueprint made from a PDF page drawn as lines, and keeps that page — the one page, taken out of your file and saved on its own. Every other blueprint is raster: scans, photos, and any PDF page that is only a picture.
A raster blueprint has a fixed number of dots, so spreading it over the sheet spreads them thinner; a vector one stays sharp at any size, in print and on screen. Zoom in and, a few seconds after a device first opens it, the part you look at is redrawn from its page. The number beside Size describes the plain picture underneath.
A page stays raster when pictures cover half the paper or more, so a sheet with a photo in the corner still prints as lines. It also stays raster when the file is protected or layered, its fonts are missing, or it uses picture data not every reader can draw.
Monochrome blueprint works on both: a vector one prints grey from its own page, still sharp.
Cleaning one up writes down what was erased, so it survives into print. If that note cannot be saved, the clean-up happens anyway and the blueprint becomes raster.
Every PDF made from it carries the page you uploaded, so cropped and erased parts are covered there, not removed — including the PDF a share link offers, whose pages hold nothing extra.
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