Indigo: A submission tool



Indigo (INgest DIGital Objects)

Indigo (INgest DIGital Objects) is a submission tool which was developed by the National Library's Digital Preservation Programme to enable staff to load digital objects into the digital preservation system. INDIGO manages the transfer of digital items into the digital preservation system.

Indigo in DPS

Indigo deposit into Preservation System


The INDIGO (Manual Deposit) was released as open-source software and can be downloaded from GitHub (external link) .


INDIGO is a java application. The tool contains a GUI that allows users to easily create very complex digital objects using METS structure maps.

Process overview

A high-level overview of the end-to-end process when using Indigo:

End-to-end process when using Indigo

*Intellectual entity - An intellectual entity consists of all the files that relate to a single item. An intellectual entity can be a single file (e.g. a scan of a painting) or it can be many files that make up a whole item (e.g. all the scanned pages of a book).

Indigo user manual

For more information on how the application works see the Indigo user guide listed on the page Internal manuals and documents. This document has been developed to assist National Library staff in using Indigo to load digital objects into the preservation system.



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