steps to change font size in pdf text box

1:28

1:10

1:22

3:39

1:02

12:19

کوتاه

1:45

2:04

2:57

17:22

7:20

16:04

2:17

4:23

4:23

5:12

کوتاه

11:23

2:23

5:30

2:56

4:00

7:32

7:33

10:03

1:47

5:06

37:50

6:17

9:01

9:41

7:03

24:59

16:41

7:05

28:22

1:28

7:05

4:19