How to Print a PDF in A3 Format Instead of A4
Question details
The user needs to print a PDF document on A3 paper, but the software or printer defaults to A4, causing a paper size mismatch.
- Product
- PDF Reader
- Device & OS
- not provided
- Scenario
- Printing a standard PDF document on a large format printer where the final output needs to be exactly A3 size.
- Observed behavior
- The printer automatically changes the manually selected A3 paper size back to A4 during the printing process.
Ensure your printer physically supports A3 paper and that the A3 paper tray is properly loaded before adjusting your software print settings.
Disable Automatic Paper Source by PDF Page Size
Prevent the PDF reader from automatically overriding your A3 paper choice based on the document's original digital dimensions.
Many PDF readers are set by default to choose the physical paper size based on the dimensions embedded in the PDF file. If the original PDF was created as an A4 document, the software will force the printer to use A4 paper, even if you requested A3.
Open your PDF document in your reader and click on 'File' > 'Print' to open the main Print dialog box.
Locate the 'Page Sizing & Handling' or 'Paper Source' section and uncheck the box labeled 'Choose paper source by PDF page size'.
Under 'Page Setup', manually set your target paper size to A3, ensure the scaling is set to 'Fit' or 'Scale to fit', and click 'Print'.
Configure System Printer Properties for A3 Output
Force the system-level printer properties to default to A3 size to prevent driver-level downscaling.
Easily Print PDFs in Any Size with WPS Office
WPS Office provides an intuitive PDF reader that makes adjusting page sizes, handling large format printing like A3, and scaling documents incredibly simple without frustrating formatting overrides.
- 1. Open PDF in WPS: Launch WPS Office and open your target PDF document using WPS PDF.
- 2. Access Print Menu: Click on the 'Print' icon on the top toolbar or press 'Ctrl + P' to open the print settings.
- 3. Select A3 Size: Click 'Properties' to ensure your printer is set to A3, then under 'Page Sizing & Handling', select 'Fit for printing margins' to scale the A4 content to your A3 sheet properly.
- 4. Print Document: Review the preview pane to ensure the document fills the A3 page, then click 'Print'.
Frequently Asked Questions
Why does my printer keep changing A3 to A4?
This usually happens because the 'Choose paper source by PDF page size' setting is enabled in your PDF software, and the original document was formatted digitally as A4. Disabling this setting forces the printer to use your manually selected A3 paper.
How do I check the original page size of my PDF document?
In most PDF readers, you can check the document's original size by going to 'File' > 'Properties' (or 'Document Properties') and looking under the 'Description' tab for the 'Page Size' dimension.
Does WPS PDF support large format printing like A3 and A2?
Yes, WPS PDF fully supports large format printing. As long as your physical printer and its drivers support A3 or A2 sizes, you can select these formats directly within the WPS PDF Print dialog and scale your documents accordingly.
What if my printer properties don't show an A3 option?
If A3 is missing from the printer properties dropdown menu, your printer model might not physically support A3 printing, or you may need to install the latest official printer drivers from the manufacturer's website instead of relying on generic system drivers.
