is there any way to combine two b5 size pdf into single legal size pdf. after googling i did not find any solution. how to approach this problem. what i can use to do it. i am developing c# desktop application which will combine two b5 size pdf to single legal page. one left size and another is right side
e.g. input
1. b5first.pdf
1234
2. b5second
567
Output should be
3. legal.pdf
1234 567