If you are scanning the document, this will create a larger file size than a document created and saved online. If the document contains signatures, graphics and non standard fonts, these can contribute to a larger file size. Here are some things you can do:

1. Check your scanner settings. Make sure your scanner is set to black and white - not color or gray scale.
2. Check your dpi settings. A suggested setting is no larger than 300 dpi.

If the document was created using word processing software, convert the document directly to PDF, instead of printing the document and scanning it. This will result in better resolution and a smaller file size.

If the document has numerous pages, break the document up into separate files and upload the separate files using the Attachments option.