How to Duplex Print on Mac | Two-Sided Printing Steps

On a Mac, duplex printing is turned on in the Print dialog by choosing File > Print and setting the Double-sided option to On.

Learning how to duplex print on Mac means knowing where the setting lives in the Print dialog and what to do when it is hidden. The path is almost the same across apps, but a few programs bury the option under a different menu. This article walks through the standard route, the app-specific quirks, and the fixes when your Mac won’t cooperate.

The Standard Duplex Print Path on macOS

Nearly every Mac app uses the same print dialog. Open your document, press Command + P or choose File > Print, then look for a Double-sided pop-up menu near the top of the preview panel. Set it to On and print.

If the Double-sided label does not appear, click Show Details at the bottom of the dialog to expand the full set of options. On some macOS versions and apps, the setting lives under a Layout section within the print dialog — open that, then choose Two-Sided and pick a binding direction.

Apple’s official guidance confirms this as the primary workflow. Apple’s Mac duplex printing instructions show the same Double-sided pop-up for both On (Long Edge) and On (Short Edge) options.

App-Specific Duplex Paths

Most apps follow the standard path above, but a few require an extra click to reveal the double-sided toggle. The table below shows where to find it in the most common Mac applications.

The pattern is consistent: find Layout or Two-Sided inside the print dialog, then pick the binding edge. If the setting is missing entirely, the next section covers the likely cause.

What If the Double-Sided Option Is Missing?

A missing or grayed-out duplex option usually means one of three things: your printer does not support automatic duplexing, the wrong driver is selected, or the duplex unit is not enabled in macOS.

Start by checking the printer’s capability. Open System Settings > Printers & Scanners (or System Preferences on older macOS), select your printer, then click Options & Supplies. If you see a Duplex Unit checkbox, make sure it is checked. If no such option appears, the printer likely lacks built-in duplex hardware.

The second common cause is the generic AirPrint driver. Many printers require the manufacturer’s full driver software to expose the double-sided setting. Download the driver from the printer maker’s support site — Brother, Canon, Epson, and HP all provide macOS drivers — then select that driver in the print dialog’s Printer dropdown rather than the default AirPrint entry.

If the option is still grayed after switching drivers, the printer simply may not support automatic duplexing. In that case, manual duplex is the workable fallback.

Manual Duplex for Non-Duplex Printers

A printer without automatic duplex hardware can still print on both sides if you handle the paper flip yourself. The process works with any printer that can print single pages.

1. Open the Print dialog and set Pages to Odd Only, then print.
2. Take the printed stack and reinsert the pages into the paper tray with the blank side facing up and the top edge oriented the same way it fed out. The correct orientation depends on your printer model — test with one sheet first.
3. In the same Print dialog, set Pages to Even Only and print. The second pass fills the blank backsides.

when the second pass finishes, flip through the stack — every page should have content on both sides, in the correct reading order.

Long Edge or Short Edge — Which Binding to Choose

The duplex setting asks for a binding edge, and picking the wrong one flips the second side upside down. The choice depends on how the finished pages will be turned.

Long Edge (Left Edge) binding is the standard for portrait documents bound like a book. Pages flip left-to-right, and the backside reads upright when you turn a page. This is the correct choice for letters, reports, and most print jobs.

Short Edge (Top Edge) binding flips pages on the top edge, like a notepad or calendar. It is also the right pick for landscape documents where pages turn up instead of sideways. If your two-sided print comes out with the back text upside down, switch from Long Edge to Short Edge (or the reverse) and reprint one page to test.

Setting a Duplex Default via CUPS

macOS uses a built-in print system called CUPS that lets you set duplex as the default for all print jobs from that printer. This is useful when you print double-sided most of the time and want to skip the dialog step.

1. Open Terminal and run: sudo cupsctl WebInterface=yes
2. Enter your admin password, then open a browser and go to http://localhost:631
3. Click Printers, then select your printer.
4. Choose Administration > Set Default Options from the dropdown.
5. Scroll to 2-Sided Printing and choose Long Edge (or Short Edge, or Off for single-sided).
6. Click Set Default Options to save the change.

From that point, every print job sent to this printer will default to your chosen duplex setting. You can still override it per job in the Print dialog.

Quick-Reference Checklist

Run through this list in order when duplex printing does not behave as expected:

• Open File > Print and check for the Double-sided pop-up — set to On.
• If missing, click Show Details and look under Layout or Two-Sided.
• If still missing, verify the printer supports duplex in System Settings > Printers & Scanners > Options & Supplies.
• Install the manufacturer’s full macOS driver and select it in the print dialog.
• For binding direction: Long Edge for book-style portrait documents; Short Edge for top-flip or landscape pages.
• If automatic duplex is not supported, use manual Odd/Even page printing.