Resize / scale PDF pages
Scale every page up or down. Runs entirely on your device.
Resize / scale PDF pages sets every page to the size you pick, from a scale factor, a width in points, or a named paper size. Content scales with the page, so text stays vector and images keep their pixels. Where the new shape differs, choose whether the page fits inside with margin or stretches to fill.
Questions
What is the difference between scale and width?
Scale multiplies the page size, 0.5 is half. Width sets an exact target in points and works out the factor per page, which is how you make a mixed-size document uniform. Add a height as well and you reach a named paper size exactly. If you set width, scale is ignored.
How do I get an exact A4 or Letter page?
Pick it from the paper sizes. A named size is two numbers rather than one, so choosing it sets a width and a height together, and the preview draws that sheet against your page at true relative size. On the command line it is width and height in points, for example 595 and 842.
What happens to the shape when the paper does not match?
You choose. Keep the shape scales your page to fit inside the new sheet and turns the difference into margin, centred. Fill the sheet pulls the page to both numbers exactly, which reaches the size at the cost of distorting the content. A Letter page is not an A4 page scaled, so one of the two has to give.
Does scaling blur text or images?
No. PDF content is scaled as vector geometry, so text stays sharp at any size and images keep their original pixels, they simply cover a different area on the page.
Will this make my file smaller?
Barely. Scaling changes the page geometry, not the data inside it. For file size, use Compress PDF.
What size is A4 in points?
595 by 842. Letter is 612 by 792, Legal is 612 by 1008, A3 is 842 by 1191, A5 is 420 by 595 and Tabloid is 792 by 1224. All six are offered as choices, and a page wider than it is tall turns them sideways to match.