To ensure that the PDF links on your Webflow staging site open in a new window, you can follow these steps:
1. Select the PDF link you want to modify by clicking on it in the Designer or in the Navigator panel.
2. In the right-hand sidebar, under the Settings tab, you'll find the Link Settings section. Here, you can choose how the link will open.
3. To make the PDF link open in a new tab or window, click on the "Open in new tab" checkbox. This will add the `target="_blank"` attribute to the link, which tells the browser to open the link in a new tab or window.
4. Save your changes, and the PDF links should now open in a new window or tab when clicked.
Regarding setting the PDF file links to have a domain-matching URL, it's important to note that Webflow doesn't provide direct hosting for PDF files. However, you have a few options to achieve a domain-matching URL:
1. Upload PDFs to a third-party hosting service: You can use services like Dropbox, Google Drive, or Amazon S3 to host your PDF files. These services allow you to generate direct URLs for your files. Once you have uploaded a PDF to your chosen service, you can use the URL provided to create a hyperlink in Webflow. This will give you a domain-matching URL for your PDF.
2. Use a PDF embedding service: If you want to embed the PDF directly on your webpage instead of providing a download link, you can use services like Issuu, Scribd, or PDFObject. These services allow you to upload and embed PDFs using an embed code. Though the URL won't be domain-matching, the embedded PDF will seamlessly display on your site.
3. Custom code approach: If you have access to your own server, you can host the PDF files on your server and create domain-matching URLs. With custom code, you can programmatically serve the PDF files from your server and generate links that match your domain.
Remember to consider the storage and bandwidth limitations of your chosen hosting service or server when hosting PDF files. This way, you can ensure that your PDF links are working properly and accessible to your site visitors.