How to Add the Same Back Page to Multiple PDF Invoices
Question details
The user needs a method to append a specific, repeating back-side page to hundreds or thousands of single-sided PDF invoices.

- Product
- PDF Editor
- Device & OS
- not provided
- Scenario
- Preparing a large batch of single-sided PDF invoices for double-sided (duplex) printing by interleaving a standard terms or back-side page after every single invoice.
- Observed behavior
- The invoices are currently single-sided and grouped in a single large PDF file, lacking the uniform back page required for proper duplex printing.
Ensure you have saved a separate PDF file containing only the single back page you wish to insert, and back up your original multi-page invoice PDF before running any automation scripts.
Automate Page Insertion Using Acrobat Pro JavaScript
Use a custom JavaScript action in Adobe Acrobat Pro to programmatically insert a specific back page, print the document, and revert the changes.
If you are dealing with thousands of invoices, manually inserting a page is not feasible. Adobe Acrobat Pro allows you to write a custom JavaScript action that can automate the process of inserting a page, sending the file to the printer, and then deleting the inserted page to keep your original file clean.
Launch Adobe Acrobat Pro, go to 'Tools', and select the 'Action Wizard' to create a new action.
Under 'More Tools', select 'Execute JavaScript' and add it to your action steps on the right panel.
Click 'Specify Settings' and enter the following script: this.insertPages({cPath: "/C/path/to/your/backpage.pdf"}); this.print({bUI: false}); this.deletePages(1); this.dirty = false;
Save the action, select your folder of invoice PDFs, and run the action. The script will temporarily insert the back page, print the duplex document, and delete the inserted page.

Use Dedicated PDF Imposition Software
Utilize third-party PDF imposition tools to interleave pages automatically without writing code.
Insert and Edit PDF Pages Easily with WPS Office
While batch interleaving thousands of pages requires specialized scripts, WPS Office provides an incredibly intuitive PDF editor for inserting, merging, and managing standard PDF page tasks effortlessly.
- 1. Open Your PDF: Launch WPS Office and open your PDF invoice document.
- 2. Navigate to Page Management: Click on the 'Page' tab located on the top navigation ribbon.
- 3. Insert the Back Page: Click 'Insert Pages' and select 'From PDF'. Choose your specific back-page PDF file.
- 4. Set the Location: Specify exactly where you want the new page to appear (e.g., after page 1) and click 'OK'.

Frequently Asked Questions
How can I print single-sided invoices as double-sided with a fixed Terms and Conditions page?
You need to interleave the fixed Terms and Conditions page after every single-sided invoice page using a PDF editor or imposition tool. Once combined into a single file with alternating pages, print the document with the 'Print on both sides' (duplex) setting enabled.
Why isn't my JavaScript executing in Adobe Acrobat?
Ensure that JavaScript execution is enabled in your Acrobat settings under Edit > Preferences > JavaScript. Additionally, verify that the file path in your script uses the correct syntax, utilizing forward slashes instead of backslashes.
What is PDF imposition?
PDF imposition is the process of arranging individual PDF pages on larger printed sheets to achieve faster printing, simplify binding, and reduce paper waste. Specialized tools use imposition to automatically collate, interleave, or booklet-format large batches of pages.




