A watermark is a semi-transparent image that usually contains a logo or seal to identify who created a document or image. If you want to watermark a PDF file, you can either insert the watermark ...

You can insert a PDF into Google Slides by converting it into images or creating a link to the same. This post covers both methods in detail.

Navigate to Insert > Smart chips > File, then search for your PDF by name. When you eventually convert your Google Docs file into a PDF, the smart chip will still appear as such and remain clickable.

You can insert one or more PDF files in your PowerPoint PPT presentation to make it more intuitive and informative by these methods.