Florio's 1598 Italian/English Dictionary:
A WORLD of Words

You can download the entire facsimile as one huge .PDF file, 38 megabytes.

I have Florio's 1611 edition, which is significantly expanded, here. It's also searchable.

Credits: This volume was scanned by the French National Library, and its images can be found there.

A (transcribed) copy of this dictionary is in the The Early Modern English Dictionaries Database, but the EMEDD has a copyright issue which does not exist here.