The Chrome extension is for the times when you are browsing the web and come across a company for which you want to find prospects. In those cases, you can use the extension to find the contacts, and reveal their info, without leaving the page. You cannot search for an individual person or create a list based on bizographics or firmographics from the Chrome extension, though you can refine your company results. You also cannot export contact information to a file from the extension, and can only view premium data (as denoted by the last time the contact information was verified). The Chrome extension will show you the top 50 contacts for a company (sorted alphabetically).
The full ContactCloud portal is meant for search-based usage: finding a specific person or creating a list based on an individual or company name, fimographics, or bizographics. With this tool, you can reveal the contact information inline or save prospects to an export file. You can also expand your search results beyond our premium data coverage, and manipulate your search results more easily through sorting and by accessing a full set of refinements.