The Adobe Acrobat is a great application, no doubt, but that does not mean that it can not be much better and have more features. Therefore, from time to time, a plugin like PDF Page Size Split comes out, which adds new functions.
With PDF Page Size Split you can divide the pages that make up a PDF according to the page size you indicate; for example, fragment documents so that they can be printed on A3 paper pages. They can also be combined in different sizes; for example, that the first 10 pages are in A3 and the rest in A5 format.
It also allows you to export reports to CSV format. If you find PDF Page Size Split useful, you also have another version to batch process the PDFs you change: PDF Page Size Split Batch.
You can free download PDF Page Size Split 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.