As we all know, Windows 10 lets you view PDF files in the Edge browser, but doesn't let you do anything with them. How to merge PDF files then? Here you can find the answer.
To merge your managed PDF files, you need either a free but limited third-party productivity app, or one of the many well-designed commercial apps. If your PDF managing needs are minimal, install the free open source PDFSam. If you want the free product, uncheck the option in the installer to download the enhanced version, which is free to preview, but $49 to keep.
A spacious interface lets you choose among functions like merging and splitting PDF files. Another interface feature combines two PDF documents alternating between pages from each file. So you can create a single PDF from separate PDFs that contain the front and back pages of an original two-sided document.
You merge two PDF files by dragging them into a PDFsam Window, which adds them to a list. You can specify a page range from each PDF, but you'll have to figure out which pages you want by viewing the document in a separate app like Microsoft Edge or Adobe Reader. Fortunately, you can open PDFs directly from the finalist in PDFsam. When you're ready to merge the PDFs, just click the Run button.
An alternative freeware app available from the Microsoft store is PDF Merger & Splitter. Compared to PDFsam, you get far fewer options and a less friendly interface, but the app outdoes PDFsam in its ability to make all the PDFs that you combine have a single page size. PDFsam only lets you force all pages to have the same size as the first page, while PDF Merger & Splitter also lets you force all pages to have the same size as the largest page or the size used by the most pages. We strongly recommend PDFsam, but PDF Merger & Splitter is worth having for this one feature.
If you want better visual cues, when merging & combine PDFs, you need a commercial app that lets you see the combined PDF before you save it to disk, and also displays thumbnail images that you can drag up and down in a sidebar in order to rearrange the pages. You can use almost any PDF editing software ranging from the moderately priced PDF-Xchange Editor or choose one of our editor's choice apps like ABBYY FineReader 15 or Adobe Acrobat DC.