How to set margins and scale
Margins and scale live under "More options" in the popup. Margins control the white space around the content; scale controls how much content fits per page, which changes where every page break lands. Between them they solve most fit problems that paper size alone doesn't.
Takes about 2 min
Steps
Open the popup and expand "More options"
This reveals the margin and scale controls.
Adjust the margin sliders
Top, right, bottom and left, measured in inches. The defaults are 0.4 in on top, left and right, and 0.56 in on the bottom — the extra bottom room is for page numbers if you display them.
Set margins to zero for an edge-to-edge PDF
Useful for captures that will be viewed on screen rather than printed, where white space is wasted space.
Adjust scale to fit more per page
If a block is splitting across pages and nearly fits, drop the scale by about 10% and re-check the preview. Step down in 5% increments and watch that specific block.
Worth knowing
- Below roughly 70% scale, body text on a dense page gets genuinely hard to read on paper. If you need to go lower, use a bigger sheet instead.
- Zero margins can clip content on some pages whose own CSS assumes a printer's non-printable edge. Check the preview before you rely on it.
- Scale is the most under-used setting in the popup and often the one that fixes an awkward layout in a single try.
Questions
What are the default margins?
0.4 inches on the top, left and right, and 0.56 inches on the bottom. The bottom has extra room so page numbers have somewhere to sit if you enable headers and footers.
How do I get rid of the white border entirely?
Set all four margin sliders to zero for an edge-to-edge PDF. Check the preview afterwards — a few pages have their own print CSS that assumes a margin, and content can sit closer to the edge than you expect.