merge PDF files in one Multiple page PDF

This entirely depends on how complex your PDFs are. @malikusama95​ 

The simple way to do this would be to read in all of your PDFs with separate readers, combining them with a combination of PDFStyler and PDFPageFormatter transformers, and then writing them out to PDF with a PDF Writer.

For more information on how to deal with PDFs in FME see these resources:

• Getting Started with PDF Reading
• Reading Simple PDFs
• How to Make a 3D Globe from 2D Vector Data

Thanks for answer @Evie Lapalme​ 

i want to multiple PDF's in one booklet

i am giving you example in attachment

same name files merge in one PDF booklet.

please give me solution

You can do this pretty easily there are a bunch of online options where you just upload your files arrange them in order and download a single merged pdf

One simple way is to use this free merge pdf tool online it lets you combine multiple pdfs in just a few clicks without any hassle

Just upload your files set the order the way you want and merge them into one clean document super useful if you are dealing with lots of files