From atoms to pixels – digitising very large format archives

We hold over 7 million archives, and they come in lots of different sizes and formats. Some are “Very Large Format”, which means they’re bigger than A0.

Most of these items are large maps and plans, some beautifully and skilfully hand-painted. They date from the 1840s through to more modern times. Some have large ornate wooden battens. Others are basic government-issue templates, like topographic maps of Aotearoa, that have been used and annotated by government agencies doing their mahi.

Te Maeatanga, our digitisation team, has spent the past six months making a survey of the Very Large items held at Te Whanganui-a-Tara. We found more than 2,000 items larger than A0. We identified the ones that need preservation work to fight damage or deterioration, and digitised more than 300.

Why we digitise

When we digitise an archive, we photograph or scan it and make the images available in our online catalogue Archway. This means people can look at it on a phone or computer, without needing to come to a reading room­. Physical archives can get damaged or deteriorate over time – digitisation is a way of making sure people can access the taonga we hold in the future.

Learn more about our mahi bringing archives to the people

An extra benefit to digitising large items like maps and plans is the quality of our images. Someone looking at a digitised map can zoom in and out, or rotate the image on their screen – so they can study the item in more detail than if they were viewing it physically.

And digitised archives can be used and shared in innovative ways that physical ones can’t, using new and evolving technologies. These include data discovery and modelling technologies and methodologies like Te Tātari Raraunga, which uses analytics to identify and connect successors to whenua.

How we digitise

Digitising the wide variety and quantity of archives we hold can be complex. The biggest item we’ve found so far is five metres long and two metres wide. To capture this and other really big items, we needed to get in the big guns, outsourcing the job to a contractor with a Cruse Scanner (the same scanner that was used to image Te Tiriti o Waitangi).

See our images of Te Tiriti o Waitangi

Digitising our Very Large Format archives

The video shows how we digitise our biggest items, from start to finish.

Find out more about preservation

Preservation is a big part of our mahi at Archives New Zealand – as well as documents, we preserve photographs, films and artworks.

Visit our online exhibition to see how we're preserving the National Film Unit collection