What this tool does
- Three ways to spread it: the same overlay page everywhere (a letterhead), page by page, or looping to alternate front and back.
- The overlay fits the size of each page without distortion, or is placed at its original size, centred.
- Opacity is adjustable: a background plan is often laid half-faded so that what is underneath stays readable.
- Each overlay page is embedded once, even when laid on forty pages: the file does not swell by forty copies of the same drawing.
- Page by page, an overlay shorter than the document leaves the following pages untouched rather than repeating the last one.
What it does not do: The overlay goes on top, never underneath. Sliding a background under the content would mean rebuilding every page as an image or as an object, which would cost it its selectable text, its links and its form fields. An ordinary letterhead (a logo at the top, a rule at the bottom) sits perfectly well on top, because a PDF has nothing at all where nothing is drawn. An overlay with a solid background will hide the text.
Nothing is uploaded. Cut your network connection once this page has loaded: the tool keeps working. How to check it yourself.
The other tools
- Merge PDFs: Several files, one document, in the order you decide.
- Organize pages: Reorder, rotate, delete, duplicate: the whole plan.
- Extract pages: Pick pages, take them out into a document of their own.
- Delete pages: Remove pages while looking at them; they are not left under the file you get.