Vellum scales every page of a PDF document so they share a single format, chosen among the common sizes or set manually — useful before printing a document made of mismatched pages. The content of each page is repositioned so it stays readable in the new format. The computation happens in your browser, with no transfer to a server.
Pick a common format — A4, Letter, A3 — or a custom scale: Vellum scales every page and repositions the content so it stays readable.
Yes, that is its main use: bringing a document made of differently sized pages to one consistent format before printing.
Yes, the computation happens in your browser, with no transfer to a server and no size limit.
Vellum — free PDF tools whose processing stays on your device.