There are a few tools available to download all the links and images contained in a webpage. Some freeware and open-source applications are listed herafter :

DownThemAll is a fast, reliable and easy-to-use add-on for Fireofx! It allows you to refine your downloads by fully customizable criteria to get only what you really want!

OutWit Hub is an all-in-one application for extracting and organizing data from online sources. It offers a wealth of data recognition features to simplify Web searches and operates as a free Firefox Add-on compatible with Windows, Mac OS, and Linux.