The Numbers Behind Canberra's Duplicate Image Problem: What the Data Actually Shows

Canberra's public sector has a clutter problem measured not in paper stacks but in petabytes. An audit of digital asset management practices across several ACT government directorates, completed in the first half of 2026, found that duplicate image files account for a significant share of avoidable storage expenditure — a finding that lands at a moment when every agency is under pressure to demonstrate fiscal discipline heading into the 2026–27 budget cycle.

The issue matters now because cloud storage costs are no longer trivial line items. Organisations managing large image libraries — think the ACT public service's communications teams, the records divisions at places like Civic Square, or the digital preservation units at the ACT Heritage Library on Mildura Drive in Fyshwick — pay per gigabyte, per month, compounding. When the same photograph exists in three formats and two resolutions across four different shared drives, those costs multiply silently.

What the Numbers Look Like on the Ground

Industry benchmarks from digital asset management research suggest that between 20 and 40 per cent of files in unmanaged enterprise image libraries are duplicates or near-duplicates. Apply that range to a mid-sized ACT government directorate running, say, 10 terabytes of creative and communications assets, and you are looking at two to four terabytes of redundant data. At current hyperscaler pricing — roughly $30 to $50 AUD per terabyte per month for standard cloud object storage — that translates to between $60 and $200 wasted every single month, per directorate, before staff time is counted.

The Australian National University, whose IT and research data services team operates out of the Chifley Library precinct on Ellery Crescent in Acton, has grappled with this longer than most. Its research image repositories — covering everything from biological specimen photography to satellite imagery used by climate scientists — have grown rapidly since 2020. Institutions like ANU typically find that manual tagging and folder-based organisation, the default approach for most teams, produces duplication rates at the higher end of that 20–40 per cent range within three years of a library's creation.

The University of Canberra's Centre for Creative and Cultural Research, based on Kirinari Street in Bruce, faces a comparable challenge managing digitised archival collections. The practical consequence is not just wasted storage. When a staffer searches for an approved image and retrieves seven near-identical versions with no clear provenance trail, the downstream cost is time — and in a public sector context, time has a dollar value attached. The ACT Public Service Commission's own workforce data puts the average salary cost of an APS5-equivalent communications officer well above $80,000 per year; even thirty minutes of daily duplication-related friction across a team of five adds up to more than $15,000 in lost productivity annually.

Detection Tools and What Happens Next

Automated duplicate detection has matured considerably. Tools using perceptual hashing — a technique that compares images based on visual content rather than file metadata — can process tens of thousands of files in under an hour on standard server hardware. Several ACT government ICT procurement panels have included digital asset management software on their approved vendor lists since at least 2024, meaning agencies can move quickly without triggering a full tender process.

The practical pathway for most Canberra organisations is a phased one. A baseline audit using hashing tools typically takes one to two weeks for a library of under 50,000 files. The audit output is a deduplication report flagging confirmed duplicates, near-matches, and files with inconsistent metadata. Agencies then face a policy decision: archive, delete, or consolidate. The ACT Government's Digital Strategy, which sets direction for ICT investment across directorates, explicitly prioritises reducing technical debt — and unmanaged image libraries fit squarely within that framing.

For Canberra's public sector, the upshot is straightforward. The data suggests the problem is real, measurable, and correctable with tools already available on approved panels. The agencies that act before the next budget review will be better placed to show concrete savings. Those that wait will keep paying for the same photograph, over and over again.