File Format & Compatibility

How to Preserve PDF Quality When Importing into OneNote on iPad or Mac

Algirdas Jasaitis Oct 16, 2026 869 views

Question details

Users experience significant image quality reduction when inserting PDFs as printouts in OneNote on Apple devices and want to know how to maintain resolution and resize multiple inserted slides.

How to Preserve PDF Quality When Importing into OneNote on iPad or Mac

Product: Microsoft OneNote
Device & OS: iPadOS, macOS
Scenario: Importing a PDF file as a printout into a OneNote notebook for review, studying, or annotation.
Observed behavior: The PDF printout quality is drastically reduced due to missing Windows printer DPI settings on Apple devices. Additionally, users are unable to batch-resize multiple inserted slides at once.

Before you start

Ensure you have the original, uncompressed PDF file saved locally on your Mac or iPad before attempting alternative import methods.

Solution 1Recommended

Keep the PDF as an Attachment or Insert High-Resolution Images

Avoid the native PDF printout degradation on Apple devices by attaching the original file or inserting pre-exported high-quality images instead of using the printout feature.

Because the macOS and iPadOS versions of OneNote do not offer the advanced printer DPI settings found in Windows, utilizing the native PDF printout feature often compresses the file. Bypassing the virtual printer is the best way to preserve original quality.

Insert as an attachment

Open your OneNote page, click on 'Insert' > 'File', and select your PDF. Choose 'Insert as Attachment' so the file retains its exact original quality for external viewing.

Export PDF to images

If you need the pages visible in your notes, use a PDF reader or macOS Preview to export the PDF pages as high-resolution PNG or JPG images.

Insert images into OneNote

Go to 'Insert' > 'Picture' in OneNote and select the exported high-resolution images to add them clearly to your notebook.

Keep the PDF as an Attachment or Insert High-Resolution Images

Solution 2

Resize Inserted PDF Pages Manually

If you have already inserted the PDF as a printout and need to enlarge the slides for better readability, you must resize them individually while preserving their proportions.

Free Microsoft Office alternative

Annotate PDFs Without Quality Loss Using WPS Office

If OneNote's printout compression on Apple devices is frustrating, try WPS Office. It includes a powerful built-in PDF editor that lets you highlight, draw, and add text directly on high-resolution PDFs without losing clarity on your Mac or iPad.

1. Open your PDF in WPS Office: Launch WPS Office on your Mac or iPad and open your original high-quality PDF document directly.
2. Use annotation tools: Navigate to the 'Comment' or 'Edit' tab to access highlighters, pens, text boxes, and shapes for note-taking.
3. Save and sync: Save your annotated PDF with zero quality loss and sync it across all your devices using WPS Cloud.

Seamlessly annotate high-resolution PDFs directly without printout compressionFully compatible with Microsoft Office formats (Word, Excel, PowerPoint, PDF)Lightweight and runs smoothly on both macOS and iPadOSFree and intuitive alternative for managing and taking notes on digital documents

microsoft office alternative - wps office

Frequently Asked Questions

Can I batch resize multiple PDF printout images in OneNote?

No, OneNote does not have a native feature to select and resize multiple images by the same amount simultaneously. You must resize each inserted page or slide individually by dragging its corner handle.

Why do my PDFs look blurry when inserted as printouts on a Mac or iPad?

When inserting a PDF as a printout, OneNote processes the file through a virtual printer. Unlike the Windows version, the macOS and iPadOS versions of OneNote lack advanced DPI (Dots Per Inch) controls, which forces the app to compress the images and lower their quality.

How do I keep the image proportions intact when making a slide larger in OneNote?

To preserve the aspect ratio and prevent the image from stretching awkwardly, hold down the 'Shift' key while clicking and dragging the corner resize handle of the image.

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