How to Add Text to Every Page of a PDF Using pdflib

Discover how to easily write a message on every page of a PDF with JavaScript using `pdflib`. Simple, efficient steps provided!
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This video is based on the question https://stackoverflow.com/q/66895749/ asked by the user 'diaconu liviu' ( https://stackoverflow.com/u/4718734/ ) and on the answer https://stackoverflow.com/a/66905687/ provided by the user 'j3ff' ( https://stackoverflow.com/u/5583283/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Add Text to Every Page of a PDF Using pdflib

When working with PDFs in your web applications, you might find yourself needing to add a consistent message or watermark across all pages. Perhaps you want to include a signature, a date, or a company logo. In this guide, we'll look at how you can achieve just that with pdflib, a popular JavaScript library that allows manipulation of PDF documents.

The Problem

You have a multi-page PDF, and you want to add a message to every page. If your PDF has 7 pages, the message should appear on all 7; if it has 5 pages, it should appear on all 5. The challenge arises when you only add the message to the first page of the document. How do you ensure that the message is added to all pages instead?

The Solution

Step 1: Setup Your PDF Document

Before you can add text, you need to set up your PDF document using pdflib. Start by loading the existing PDF bytes and embedding the desired font.

Here’s an example code snippet to get you started:

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Step 2: Iterate Over All Pages

Instead of targeting just the first page, you will need to loop through each page in the document. This allows you to draw text on every single page.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Save and Download the PDF

Once you've drawn the text on all pages, you have to save your changes and prepare the document for download.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you should now be able to add a message to every page of a multi-page PDF using pdflib. This method is not only effective but also efficient, allowing you to customize various aspects of your PDF, such as styling and positioning. Don't hesitate to adjust the message according to your needs and enjoy the flexibility of PDF manipulation!

Feel free to reach out if you have any questions or need further assistance. Happy coding!

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