The manuscripts of the former Würzburg Cathedral library – or the “Liber Sancti Kyliani” as the ownership entry on the flyleaf reads – rank among the most prestigious collections of Würzburg University Library today. Once the carefully guarded private propriety of the Franconian apostle St. Kilian, these codices which bear testimony to Würzburg’s cultural history since the foundation of its bishopric in 742 are now accessible for everyone: A project promoted by the Deutsche Forschungsgemeinschaft and the Bayerische Staatsministerium für Wissenschaft, Forschung und Kunst has digitised the complete collection of the Cathedral Library manuscripts preserved in Würzburg and made them accessible via an innovative web portal.