Merge PDF Documents
Go to a free website called http://www.pdfmerge.com/. This website will allow you to merge multiple pdf documents as one file up to 15 MB.
Click on the Browse button on each line for as many documents as you want to merge. If you are merging more than 4 documents you can click the +More files button for as many more lines you need. (Documents will be merged in the order that you have browsed for them on this screen).
Click the Merge button.
When the document is done being merged you will receive the option to Open or Save the document.
If you are using this for a document that you are uploading to your listing in FlexMLS and it is over 5 MB for the file size please see the Online Document Compressor article which will give you instructions on how to compress the PDF to make it smaller than so that it can be uploaded.