Whose formatting/styles are used?

The first file's styles are used as the base document that the others are appended into.

Merge Word Files

Merge Word Files combines multiple Word documents into a single file, in upload order.

Click to upload a fileor drag and drop

Combine multiple PDF files into one document.

Combine multiple Excel workbooks into one.

Split a PDF into individual single-page files.

Reduce a PDF's file size.