To ensure that the iBooks client is installed on your ipad, please open iTunes on your computer, which has a "Books" tab. Just drag the PDF file here to synchronize.

The specific operation steps are as follows:

1. First download the software ibook or other pdf browsers on the ipad.

2. Then open the computer's itunes and switch to books.

3. Next, add the pdf file to itunes and drag it directly into the file.

4. Then plug in the ipad and open the book.

5. Then check the box in front of the book you want to synchronize.

6. Click Apply.

7. Open ibook on ipad, click the collection, and then select pdf.

8. Finally, you can see that the pdf file has been successfully saved on the ipad.