Page layouts and view modes in PDF by Zaweba
Single page, two-page spreads, cover page, full screen, read mode and rotate view: how to set PDF by Zaweba up for the document in front of you.

How a PDF sits on your screen changes how easily you can read it. A long report wants to scroll, a magazine wants its spreads side by side, and a slide deck wants to fill the whole monitor. PDF by Zaweba gives you a handful of layouts and viewing modes so you can match the view to the document instead of putting up with one fixed way of looking at everything.
None of these settings touch the file itself. They only change what you see, which means you can switch freely while you read and nothing about the PDF you send on will be different.
Choosing a page layout
The choices live under View > Page layout. Single page shows one page at a time, which is handy when you want to concentrate on a form or a diagram without the next page creeping into view. Single page continuous strings the pages together in one long column, the natural choice for reports, manuals and anything you read from top to bottom.
Two-page puts pages side by side, and two-page scrolling does the same while letting you scroll through the pairs. These suit brochures, books and printed magazines that were designed as spreads. The cover page option matters here. A printed booklet usually has its cover on its own, with page 2 and page 3 facing each other inside. Turn cover page on and the pairs line up the way the designer meant, so left and right pages match the printed piece.
You can also choose whether there are gaps between pages. Gaps make it obvious where one page ends; no gaps gives a cleaner, continuous strip that some people find easier on the eye when scrolling through long text.
Turning the view, not the file
Scanned documents and drawings sometimes arrive sideways. Rotate view, on Ctrl+Shift+Plus and Ctrl+Shift+Minus, turns the display so you can read it comfortably. It changes only the display and not the file. That is the right tool when you are just reading and don't want to alter a document that someone else owns. If you do want the pages themselves turned for good, that is a job for the page tools in the Pages menu, which save the change into the PDF.
Full screen, read mode and scrolling by itself
Full screen, on F11 or Ctrl+L, clears everything away and gives the page the whole monitor. It is the quickest way to present a PDF in a meeting or show a drawing to someone across a desk. Preferences has a Full screen section where you can choose to show one page at a time, use a black background, and turn pages every so many seconds, which turns a PDF into a simple self-running slideshow for a stand or a waiting room screen.
Read mode, on Ctrl+H, is a gentler step. It keeps you in the window but takes the clutter away so the page gets more room. Automatic scrolling, on Ctrl+Shift+H, moves the document down by itself, so you can read a long piece without reaching for the mouse wheel every few lines.
The app can also follow the Windows light or dark theme. If you work with Windows set to dark, the program around the page can match it, which is easier on the eyes late in the day.
Getting the most from them
A good habit is to pick the layout from the document's shape. If the PDF was made as single A4 pages, continuous single pages is almost always best. If it was laid out as spreads, use two-page with cover page on and you will see the design as intended. If a spread looks wrong, with the inside pages split across two rows, the cover page setting is the thing to flip.
Remember that rotate view is temporary. People sometimes turn a sideways scan in the view, send the file on and are surprised that it still opens sideways for everyone else. Use the page rotation tools when the change needs to travel with the file.
For presenting, set up the full screen options once in Preferences before the meeting, then F11 is all you need on the day. Pair it with page thumbnails and tabs for preparation, and with search when someone asks you to jump to a particular section.
These are small settings, but together they make a long session with a PDF feel far less like a fight with the window and more like reading.