"Below we have listed the Persian manuscripts in the British Library which have been digitised up to the present time. Click on the manuscript number at the head of each description to go directly to the relevant entry on the British Library's digitised manuscripts site. Once there, click on the thumbnail image of the manuscript to get to the full digitised version which will open in a new window (please note that all subsequent digitised manuscripts that you view will appear in this same window). You can choose to view one page at a time or two together in book format (i.e. as if you were reading it). Make sure, however, that you select 'Right to Left' in the 'Direction' box..."
See: Alphabetical list of Open Access Islamic Manuscripts Collections