Duplicate Image Replacement: What Officials, Experts and Key Figures Are Saying

Digital archives are bloated. Storage costs are climbing. And the images causing the problem are ones nobody can see twice — because nobody noticed they were there twice in the first place. Across Canberra's public institutions, the question of how to identify and replace duplicate digital images in official records and public-facing systems has moved from a technical footnote to a genuine administrative headache.

The issue has gained traction in 2026 partly because of scale. Government agencies migrating legacy document systems onto centralised cloud platforms — a process that accelerated after the Australian Public Service Commission pushed departments toward consolidated digital infrastructure — have discovered libraries of duplicate imagery embedded in policy documents, public reports and internal communications. Some repositories, according to records management professionals working in the sector, contain duplication rates that inflate storage volumes well beyond what the underlying content would otherwise require.

What the Experts Are Telling Government

At the Australian National University's College of Engineering, Computing and Cybernetics on Kambri campus, researchers working on computer vision and image hashing have been in contact with Commonwealth agencies exploring automated deduplication tools. The core technology — perceptual hashing, which generates a fingerprint for each image and flags near-identical copies — is mature, but implementing it inside government-grade systems with strict data sovereignty requirements adds layers of complexity that commercial off-the-shelf tools don't always accommodate.

The National Archives of Australia, headquartered on Queen Victoria Terrace in Parkes, is one institution navigating exactly that tension. The Archives holds responsibility under the Archives Act 1983 for preserving Commonwealth records in formats that remain accessible and authentic. Replacing a duplicate image — even one that is byte-for-byte identical to another already held — requires a documented administrative decision, not a quiet deletion. Records managers in the sector note that this creates a situation where the technically obvious solution conflicts with legislatively mandated preservation obligations.

The University of Canberra's Faculty of Science and Technology has run short courses for ACT public servants on digital asset management, including sessions touching on image governance. Practitioners who have attended those programs describe a consistent theme: agencies often lack a single authoritative register of which images are canonical, which are duplicates, and which have been intentionally reproduced for accessibility or version-control reasons.

ACT Government Systems Under the Microscope

Closer to home, the ACT Digital Strategy — the territory government's framework for modernising public-sector technology — nominates data quality as a priority. Transport Canberra and City Services, which maintains public-facing digital content including maps, route imagery and infrastructure photos relevant to the Light Rail Stage 2 corridor running toward Woden, has been working through a content audit that includes image deduplication as one component.

The ACT government's whole-of-government ICT arrangement with its major platform providers includes storage costs that, industry analysts note, typically run between $0.02 and $0.05 per gigabyte per month on standard cloud tiers — figures that compound quickly when duplicated image libraries run into the tens of thousands of files. For agencies operating under the ACT's 2025-26 budget, which allocated $18.3 million to digital infrastructure across directorates, every efficiency in storage management has a practical dollar value.

In Gungahlin and Belconnen, where the territory government has been producing high volumes of development and planning imagery to support rezoning consultations under the ACT Planning Act 2023, the duplication problem is particularly acute. Community engagement portals for suburbs like Taylor and Macgregor have accumulated image libraries across multiple rounds of public consultation, with no systematic process yet in place to consolidate or retire redundant files.

The practical advice coming from information governance specialists is straightforward: before replacing any duplicate image in a government system, agencies should run a hash-comparison audit to confirm true duplication, check whether the image carries metadata linking it to a specific record or decision, and document the replacement in a change log that satisfies Archives Act obligations. For commercial and university systems, the bar is lower — but version control and attribution records still matter, particularly where images appear in published research or publicly accessible reports. The ACT government's Digital Records team, based in Civic, is expected to release updated image management guidance before the end of the 2026 calendar year.