The Numbers Problem: How Duplicate Images Are Costing Canberra's Digital Archives Thousands of Hours

Canberra's public sector holds more digital images than almost any comparable city its size — and a growing share of those files are exact or near-exact duplicates sitting silently across departmental servers, costing storage budgets and slowing down archival projects. That's the emerging picture from digital asset management reviews conducted across several ACT agencies in the first half of 2026.

The issue matters now because the ACT Government's broader digital transformation push, which includes migrating legacy records to cloud-based systems ahead of a 2027 deadline under the Territory Records Act review framework, is forcing agencies to confront file libraries they have never properly audited. When those audits happen, the duplicate problem surfaces fast.

What the Data Actually Shows

Industry benchmarks from digital asset management consultancies suggest that large organisations — those holding more than 500,000 image files — typically find that between 30 and 40 per cent of their visual content is duplicated in some form, whether identical copies, resized versions, or recoloured variants stored separately rather than linked from a single master file. For a federal government city like Canberra, where dozens of agencies each maintain their own content management infrastructure along the Northbourne Avenue corridor and inside the parliamentary triangle, those percentages compound quickly.

The Australian National University's library digitisation program, which has been converting physical photographic collections into searchable digital catalogues since 2019, completed an internal file review earlier this year. Without referencing any specific internal figures the institution has not publicly released, it is publicly known that collections digitisation projects of comparable scope at peer institutions routinely discover that manual scanning workflows — where staff scan originals at multiple resolutions for different use cases — generate three to five derivative files for every source image. Across a collection running to tens of thousands of items, that arithmetic creates a storage and management burden measured in terabytes.

At the University of Canberra's Bruce campus, the library's digital media team has been piloting automated deduplication software since late 2025 as part of a federally co-funded research infrastructure grant. The pilot covers image assets tied to UC's institutional repository. Storage administrators working in comparable projects at other Australian universities have publicly noted savings of between 20 and 35 per cent in active storage consumption once deduplication tools are properly configured — figures that translate directly into reduced cloud hosting costs.

Canberra's Specific Exposure

The ACT government's own ServiceACT digital services branch, based in Canberra's CBD near London Circuit, manages image assets across the Access Canberra portal and a range of citizen-facing websites. Portal modernisation projects of the type ServiceACT has been undertaking frequently inherit image libraries accumulated over a decade or more, with no consistent file-naming convention and no centralised rights metadata. Each website migration is effectively a fresh audit — and each audit tends to find the same thing.

Suburbs like Gungahlin and Belconnen, where new community facilities have been photographed extensively for planning communications, infrastructure announcements and council newsletters, generate particularly high volumes of location-specific imagery. When those photos pass through multiple communications teams — the ACT Planning Directorate, Transport Canberra, and local district offices — without a shared asset management system, duplication is almost structurally guaranteed.

The practical cost is not merely abstract. Cloud storage pricing for government-tier services in Australia typically runs between $0.02 and $0.05 per gigabyte per month depending on vendor and contract structure. An agency sitting on two additional terabytes of redundant image files is spending between $480 and $1,200 a year on storage that delivers no value. Multiply that across a dozen mid-sized ACT directorates and the aggregate waste becomes material.

For agencies and institutions beginning to grapple with this, the path forward is fairly well-documented even if the implementation is laborious. Establishing a single digital asset management platform with a master-file-plus-derivative structure is the standard recommendation from the Australian Digital Transformation Agency's published guidance on content management. Running a deduplication pass before any cloud migration — rather than after — cuts both the migration cost and the ongoing hosting bill. The organisations that wait until after migration tend to pay for the audit twice.