How to Convert a Book to PDF with Custom Page Dimensions
Question details
The user needs to export a book manuscript to a PDF using specific custom dimensions (7.44 x 9.69 inches), but the output defaults to standard letter size.

- Product
- PDF Converter
- Device & OS
- not provided
- Scenario
- Formatting and exporting a book manuscript for publishing with specific trim size requirements.
- Observed behavior
- The resulting PDF defaults to the standard 8.5 x 11 inch page size, ignoring the requested 7.44 x 9.69 inch dimensions.
Ensure you know the exact trim size required by your book publisher or printing service. It is also helpful to save a backup copy of your original manuscript before adjusting page setups and margins.
Set Custom Page Size in Document and PDF Settings
The most reliable way to ensure your PDF retains custom dimensions is to configure the page size in the source document's page setup and verify the PDF export settings.
When converting a document to PDF, the conversion tool often defaults to standard paper sizes like Letter or A4 if the custom size isn't explicitly defined in both the document layout and the printer/export properties.
In your word processor, navigate to the 'Page Layout' or 'Layout' tab and click on 'Size', then select 'More Paper Sizes' or 'Custom Size'.
Input your specific book dimensions (e.g., Width: 7.44 inches, Height: 9.69 inches) and apply the changes to the whole document.
Check your document margins to ensure your text fits properly within the new custom page size without being cut off or misaligned.
Go to 'File' > 'Export to PDF' or 'Save As' and choose PDF. Before saving, check the 'Options' or 'Advanced Settings' to ensure the export matches the document's page size rather than defaulting to standard Letter size.

Easily Convert Books to PDF with Custom Sizes in WPS Office
WPS Office provides precise page layout controls and a built-in PDF converter, making it incredibly easy to format your book manuscript and export it to PDF with exact custom dimensions for publishing.
- 1. Open your manuscript: Launch WPS Writer and open your book manuscript document.
- 2. Set custom page size: Go to the 'Page Layout' tab, click 'Size', and select 'Custom Size' to enter your book's dimensions (e.g., 7.44 x 9.69 inches).
- 3. Initiate PDF export: Click on 'Menu' in the top left corner, then select 'Export to PDF'.
- 4. Confirm and export: In the export dialog, ensure the settings are configured to match the current page layout, then click 'Export' to generate your custom-sized PDF.

Frequently Asked Questions
Why does my PDF always default to 8.5 x 11 inches?
This usually happens because the PDF converter or virtual printer is set to a default paper size (Letter or A4) in its preferences. You must explicitly set the custom paper size in both the document layout and the PDF printer/export properties.
Can I change the page size of an already converted PDF?
While some advanced PDF editors allow you to crop or resize pages, it is highly recommended to change the page size in the original source document (like Word) and re-export it to avoid formatting issues and distorted text.
How do I add bleed margins to my custom PDF size?
To add a bleed (e.g., 0.125 inches), you need to add that value to your custom page dimensions in the Page Setup menu of your word processor before exporting. For a 7.44 x 9.69 book, your new page size with bleed would be 7.69 x 9.94 inches.
Does WPS Office support custom page sizes for PDF export?
Yes, WPS Writer allows you to define exact custom page dimensions in the Page Layout tab. When you use the built-in 'Export to PDF' feature, it automatically retains these custom dimensions in the final PDF file.




