Purpose

Welcome to the placeholder landing page for the Legacy NG Beta International Image Interoprability Framework (IIIF) Server, which was set-up to allow initial direct access to a limited set of National Gallery images.

These web pages have been set up to provide examples of how the system works in a human viewable form, displaying images in the Project Mirador viewer, but the system is generally designed to be called directly by other computer systems.

At this time all of the images displayed via this server are provided under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Basic URL Format - NG IIIF Server

NG IIIF URLs take the form: namespace/AAA-AAAA-AAAA/iiif-variables, where:

  • The namespace is:
  • A is any alphanumeric character and together they represent a unique NG PIDs.
  • The first set of three characters act as a prefix, indicating what kind of entity is being described by the PID.
  • The remaining characters are arbitrary and just form the rest of the PID.
    • Initially we will be using 8 additional characters: which will allow for 368 possibilities per prefix.
    • The system has been built to allow additional sets of 4 characters to be added to scale the number further if required.
  • And the various options for the iiif-variables are defined by the IIIF standards, some examples are provided below.
The search option, provided on this page can be used to find and display the images associated with NG PIDs based on names, titles, inventory numbers, etc.

Examples of standard IIIF URL formats

Full IIIF Manifests will be presented as:

Image information will be presented as:

And basic images can be displayed following the standard url structure for IIIF, for example: