Metadata is like a "digital ID card" for each PDF file; it contains core information about the document, such as the title, ...

In iOS, Apple's stock Files app is a handy place for keeping PDF documents on your iPhone or iPad. Not only can you view and organize your documents in the Files app, but it also provides you with ...

This will return web pages that have links to PDF files, even if the pages themselves are not PDFs[2][3][5]. By using these operators effectively, you can significantly narrow down your search results ...