Viewing estimated load times
A document that contains many or large images can take much longer to open in a browser than one with few or small images, especially over a slow Internet connection. When designing a document that use images or multimedia files, you should consider the probable load time for your target audience. Unless all of your users will load your document over a local area network or fast broadband connections, consider keeping the total size (in kilobytes) of all the resources in the document down to a level that will allow comfortable viewing by users with slow Internet connections.
To view information about the total size of the resources used in a document: On the Document menu, go to Properties, click Document, and then click the Advanced tab. The same dialog box also displays estimated load times for various connection speeds. Click the Connection speed box to select a speed, and the estimated transfer time will be updated.