How to Change a PDF From Landscape to Portrait on Windows, Mac & Mobile

I ran into this with a five-page scanned report: every page came in landscape, and on my phone I had to tilt my head to read it. Rotating the pages straightened the scan. But a colleague had the opposite problem — a wide chart that needed to print on a portrait sheet without turning the words on their side. Same search term, two completely different fixes. This guide covers both, on Windows, Mac, and your phone, plus where each method hits its limit.

Rotate the page vs. reflow to portrait — which do you need?

The table below separates both cases, so you can choose the correct UPDF option without changing the PDF in the wrong way:

If your text is currently sideways, you want Part 1. If your text reads fine but the page is the wrong shape for printing, you want Part 2. Get this right and you'll never produce a sideways-text PDF by accident.

Part 1: Rotate a PDF From Landscape to Portrait (Fixes Sideways & Scanned Pages)

This method works when the page is physically turned the wrong way, often after scanning. I use it when I need to convert a PDF from landscape to portraitwithout changing the actual layout. The whole page turns, so headings, images, and text all move together. Follow these steps on Windows and Mac to rotate a PDF from landscape to portrait:

On Windows & Mac (Organize Pages)

Step 1. Open the PDF in UPDF. If you don't have it yet, download UPDF for free and install it in about a minute.

Step 2. Launch UPDF on my Windows or Mac computer, then import the PDF that appears sideways. After that,  go to the left toolbar and choose Organize Pages to view every page as a thumbnail.

Step 3. Next, select the landscape page that needs correction. For several pages, hold Ctrl (Windows) / Cmd (Mac) and choose all sideways pages together, so you do not have to repeat the process manually.

Step 4. Click Rotate Clockwise or Rotate Counterclockwise in the top toolbar. Each click turns the selection 90°.

Step 5. Lastly, save the PDF after confirming that the text is upright. This keeps the corrected orientation for the next time you open, share, or print the file.

Faster Single-Page Route

Sometimes I only need to fix one page, so I use the thumbnail shortcut instead of opening the full page organizer. This route is quicker when a scanned page appears sideways inside a longer file. Adhere to the instructions below to try this faster single-page rotate:

Instructions. Start by opening the PDF in UPDF and looking at the page thumbnails on the left side. Then right-click the sideways page thumbnail to open the page menu. Afterward, picked the Rotate Clockwise / Counterclockwise option from the menu and repeated it until the page stood upright. Once it looks correct,  save the file to keep the change.

On iPhone, iPad & Android

The mobile app is helpful when I notice the wrong direction after opening a PDF on my phone. I use it for quick scanned-page fixes, especially when I only need to turn pages upright before reading or sharing. Follow the steps below to try to change the PDF from landscape to portrait on mobile:

Step 1. Open the PDF in the UPDF mobile app and go to the Page icon at the top to select Organize Page.

Step 2. Afterward, select the page that appears sideways. If several pages are wrong,  choose each one that needs the same rotation. Then tap the Rotate option until the text becomes readable in portrait orientation.

Step 3. Tap Done in the top-right to apply. Once the result is confirmed, navigate to the Save option to finalize all changes.

Part 2: Reflow a PDF to Portrait Without Rotating the Text (Windows & Mac)

If the text already reads fine, but the page is too wide, I do not rotate it. For example, a wide chart may be landscape but still readable from left to right. If I rotate that page, the words will turn sideways.

Instead, I convert a PDF from landscape to portrait by using the Print dialog and saving the reshaped output as a new PDF. This method does not require a physical printer. I use it when I want a portrait page size while keeping text upright. Follow the steps below to reflow a PDF to portrait without rotating text:

Step 1. Open the PDF in UPDF and check the page that needs reshaping. Before changing print settings, confirm that the text itself is not sideways.

Step 2. Click the small arrow next to the Save icon and choose Print, or press Ctrl + P (Windows) / Cmd + P (Mac).

Step 3. Now, set the orientation to Portrait and review the preview area carefully, because it shows whether the content still fits the page.

On Mac, the interface looks slightly different, and the layout options may be grouped under a dropdown or preview panel. So locate the Orientation setting and choose Portrait.

Step 4. Check the preview to confirm the text stays upright and nothing important is cut off. If content runs off the edge, adjust Scaling (e.g. 90%) or change Paper Size.

Step 5. Instead of a physical printer, save the result as a PDF: on Windows pick Microsoft Print to PDF as the printer; on Mac use the PDF drop-down at the bottom-left and choose Save as PDF. Pick a location and save.

When the Layout Needs Real Editing

Reflowing changes how the page fits, but it does not fully redesign the document. It will not rewrite paragraphs, move every image perfectly, or rebuild a table. I use it when I only need a clean portrait version for reading, saving, or printing.

For light fixes, I switch to Edit mode in UPDF. I may edit a line, move an image slightly, or adjust a small object after changing the orientation in PDF. When the whole design needs restructuring, I treat it as a layout-editing task, not only an orientation change.

Part 3. Edge Cases — When Orientation Won't Change

Even after I change the orientation in PDF, some files may still behave differently because of restrictions, printer settings, or page scaling. In these cases, I first identify the exact problem and then apply the appropriate fix.

• "I can't rotate or change the file — the options are greyed out." The PDF likely has editing restrictions (a permissions password). Remove the restriction first with Protect > Remove Security (only on files you own or are authorized to change), then change the orientation.
• "It looks portrait in UPDF but prints landscape." Your printer is auto-rotating at print time. Re-open the Print dialog, uncheck Auto-Rotate, and set Portrait explicitly before sending to the printer.
• "After reflowing to portrait, my content is tiny." Wide content shrank to fit a narrow page. Increase Scaling or move up a paper size (e.g. A4 to A3) before saving.

Part 4. FAQs

Conclusion

Changing a PDF from landscape to portrait comes down to one decision: are you straightening a sideways page, or reshaping an upright one? Rotate in Organize Pages for the first (and it's the one you can also do on your phone); use Print > Portrait for the second, on Windows or Mac. UPDF covers both across every platform — Windows, Mac, iPhone, and Android — with a one-time license option.

Download UPDF for free to try rotating and reshaping your own PDFs — installation is free, and Pro features are available when you need export without the trial watermark.