Learn how to show or hide file icon overlay on thumbnails in Windows 11/10 using File Explorer Options and Registry Editor.

To add an entire new PDF after a specific page, select that page’s thumbnail, go to Edit, Insert, and then Page from File. Choose the PDF you want to add, and click Open.

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 ...