PDF Expert How-tos

How to edit PDFs

Do you need to fix a typo or update your photo in a CV? PDF Expert can do it for you! Learn how to edit existing PDF text, add and replace images, and even add links to PDFs on your iPhone and iPad.

How to fill out PDF forms

There's no need to print tax forms, invoices, and other documents. You can fill out PDF forms on your iPhone and iPad. Find out how to do it in a few taps.

How to sign a PDF

Easily sign PDF contracts and invoices on your iPhone and iPad. Learn how to create a beautiful signature and use it across all your devices.

How to merge PDFs

With PDF Expert 7, it only takes a few seconds to combine PDFs on your iPhone and iPad. Once you've merged multiple files, you can easily reorder, delete, or rotate pages.

How to view PDFs

PDF Expert provides a convenient, easy way to review and read PDF documents. Let's explore some tricks that can remarkably improve your reading experience with PDF files!

How to annotate PDFs

Annotating is the most natural way to organize and remember the text you read. Highlight text, make notes and comments, draw on PDFs, add shapes, and more.

How to transfer PDFs from your computer

Quickly move files between your iPhone or iPad and computer with Readdle's Wi-Fi Transfer. All you need is our free PDF Expert app and a Wi-Fi network.

How to create a PDF

If you’re wondering how to make a PDF file on iPhone or iPad, our PDF Expert 7 is here to help. It lets you easily create new PDFs as well as convert existing files into PDFs.

How to reduce the PDF file size

Don't worry if the PDF file you're going to share is too large. PDF Expert lets you compress PDFs on your iPhone and iPad in just two taps.