Medieval and Byzantine Art

The Digital Scriptorium is an image database of medieval and renaissance manuscripts that unites scattered resources from many institutions into an international tool for teaching and scholarly research.

Descriptions and images of medieval and Renaissance manuscripts in the British Library, one of the richest collections in the world.

Digital facsimiles of complete manuscripts, scanned directly from the originals: Ancient papyri (from Herculaneum), Celtic and other medieval manuscripts.

Digitized manuscripts held in Swiss libraries and archives - can search by Decoration Type (Figurative, Decorative, etc), Technique (e.g. Fully painted, Penwork, etc), or Position in the book. Can search particular illuminators (search under Person Index in top menu)). The full-length descriptions are in German, but Google translating the page is actually quite fine.

The website Medieval Illuminated Manuscripts presents almost 11000 unique illustrations from 400 illuminated manuscripts from the Koninklijke Bibliotheek.

One collection in the Bezalel Narkiss Index of Jewish Art. 

Mandragore is the database of iconographic collections held in BnF's Department of Manuscripts (Département des Manuscrits).