The Chester Beatty Library Seals Project:
is an online, interactive database of seal impressions found in Islamic Manuscripts… as a visitor to the site, you are invited to participate in deciphering the seals, identifying the individuals or institutions named, and adding information such as other sources of the same seal impression or other seals that name the same individual or institution.
As there is currently no convenient means by which to find or share information on seal impressions, we hope that this database will be a useful resource for anyone working on Islamic manuscripts.
A user guide is available here. Individual seals are available for download as low-resolution files for teaching or research. Seal records are also linked to the full manuscript so entire folios may be easily viewed.