How to merge and split PDF files

In normal work, there will always accumulate a lot of documents and data, such as files, the time of the file is messy, need to be organized, some of the same categories of files need to be merged together, some documents need to be separated according to requirements. If some Office documents are okay, but if the files you need to work with are in PDF format, how do you merge the splits?
Merging PDF files
Prepare the documents that need to be merged, close the open documents first, and mark the documents as they are already open, to determine the order in which the documents are merged.
Open the PDF merge software, find the "PDF merge" option and select, and then add the document in the order in which the documents are merged, and the document needs to be merged in the same order as the number in front of the added file.
You can enter a page range in page number selection so that the set page is merged when you merge. Finally click the Convert button and wait for all the files to finish.
Split PDF file
As with the PDF merge, first open the Split tool, select the "PDF split" option, and then add the PDF document that you want to split into the tool.
Then the most important step is to enter the page range according to the page number split rule in page number selection.
The last point conversion button, when the document processing is complete, is split into multiple documents according to the Set Page Division range.

How to merge and split PDF files