Formatting Issues

How to Convert a Word Document with Mixed A3 and A4 Pages to PDF

Kushani Nimanthika Oct 16, 2026 868 views

Question details

The user needs to convert a Word document containing both A3 and A4 paper sizes into a PDF without truncating the larger A3 pages.

How to Convert a Mixed A3 and A4 Word Document to PDF

Product: Word
Device & OS: not provided
Scenario: Attempting to generate a final PDF file from a Word document that requires different paper sizes for different sections.
Observed behavior: Printing or converting the document forces a single A4 size output, which truncates the A3 sections and triggers a paper size mismatch warning in Word.

Before you start

Ensure your document is properly divided into sections before adjusting page sizes, as different paper sizes require distinct Section Breaks to function correctly.

Solution 1Recommended

Use the Native Export or Save As Feature

Bypassing the standard 'Print to PDF' driver and using Word's built-in PDF export ensures the file retains its original section-based page dimensions.

Standard print drivers often default to one paper tray size (like A4) for the entire job, which causes larger pages to be cropped. The native Export function correctly reads the metadata of the document's layout setup.

Verify Section Page Sizes

Highlight the content for your A3 pages, navigate to Layout > Page Setup, select A3 as the paper size, and ensure 'Apply to' is set to 'This section'. Repeat this process to verify your A4 sections.

Access Export Options

Click on 'File' in the top-left corner of the ribbon, then select 'Export' from the sidebar menu.

Create PDF

Click on 'Create PDF/XPS Document'. In the save dialog window that appears, ensure the 'Save as type' is set to PDF, and click 'Publish' to generate the file.

Use the Native Export or Save As Feature

Format Integrity Maintained: Your resulting PDF will now dynamically display both A4 and A3 dimensions correctly when scrolling.

Solution 2

Configure PDF Printer Driver for Mixed Sizes

If you are required to use a specific third-party PDF printer, you must manually adjust its properties to allow multiple paper sizes.

Native PDF Export

Export Mixed-Size Documents to PDF Smoothly with WPS Office

WPS Writer provides an incredibly intuitive interface for setting up documents with mixed page sizes and features a highly reliable, built-in PDF export engine that never crops or truncates varying page dimensions.

1. Open your Document: Launch WPS Writer and open your mixed-size document.
2. Check Page Layouts: Go to the 'Page Layout' tab to verify that your sections are correctly designated as A4 and A3.
3. Select Export to PDF: Click on the 'Menu' button at the top left and select 'Export to PDF' from the dropdown list.
4. Confirm and Export: Review the export settings in the dialog box and click 'Export' to generate a perfectly scaled, multi-size PDF.

Easily mix A3, A4, and custom page sizes within a single document.Built-in, one-click Export to PDF tool preserves all section formats natively without print driver issues.Highly compatible with Microsoft Word (.docx) formats and complex page layouts.Lightweight, fast, and completely free to download for daily document tasks.

microsoft office alternative - wps office

Frequently Asked Questions

Why are my A3 pages truncated when I use 'Print to PDF'?

Most virtual 'Print to PDF' drivers simulate physical printers, which often default to a single paper size (like A4) for an entire print job. Using the 'Save As PDF' or native 'Export' function bypasses this limitation by reading the document's structural settings directly.

How do I separate my A4 and A3 pages in Word?

To use multiple page sizes in one document, you must use Section Breaks. Go to the Layout tab, click 'Breaks', and insert a 'Next Page' section break between the pages. You can then apply specific paper sizes to each independent section via Page Setup.

Can a single PDF file actually contain different page sizes?

Yes, the PDF format natively supports documents with mixed page sizes and orientations. Standard PDF viewers like Adobe Acrobat or WPS PDF Reader will display each page in its exact specified dimension seamlessly.

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