how do i remove a watermark from a pdf document

4:28

12:40

12:39

12:45

5:33

20:10

8:22

3:24

8:27

13:38

20:10

4:10

2:30

1:18

1:51

2:03

4:07

3:17

3:04

5:48

4:23

3:17

2:35

2:35

20:50

7:53

1:47

1:32

2:16

2:34

4:48

6:16

2:11

2:11

2:34

2:34

5:59

15:52

2:03

4:32