By default, when opening a PDF file, it will open a long URL like this: https://static1.squarespace.com/static/644f2654b9c076768430cf4b/t/65af6a17e2c4821faedba955/1705994779057/book.pdf (this is just an example URL so it doesn’t exist, no need to click it)
We can use a trick to change it to something like this: yourdomain/pdf/book
#1. First, you need to get a PDF URL
#2. Create a Page with
- Name: you can enter anything
- URL: /pdf/book

#3. Use this code to Page Header Code Injection
Replace the PDF URL in the code with your PDF file URL.
<iframe src="https://static1.squarespace.com/static/644f2654b9c076768430cf4b/t/65af6a17e2c4821faedba955/1705994779057/book.pdf">
</iframe>
<style>
iframe {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
width: 100%;
height: 100%;
z-index: 9999;
}
</style>

#4. Result
