This online dictionary is really easy, so you'll be able to finish your language projects quickly. The dictionaries are:
- English-Icelandic-English dictionary 300,000 headwords
- Spelling dictionary 80,000 headwords
- Danish-Icelandic-Danish dictionary 46,000 headwords
Part of this dictionary is free. Just type your search word and go. Please note that the free part is ad-based, the dictionaries are considerably smaller and some features may not be available. However, this may be enough for you.
There are plenty of subscription choices for those who want full and unrestricted access to the dictionary.