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

Melbourne's cultural and government institutions are under growing pressure to establish clear, enforceable standards for identifying and replacing duplicate digital images in public collections — and the conversation among archivists, technologists and policy figures has sharpened considerably in the first half of 2026.

The urgency stems from a convergence of factors: the digitisation push accelerated by State Library Victoria's ongoing collection modernisation program, a boom in AI-assisted cataloguing tools across the sector, and rising public expectations around the accuracy and integrity of digital archives. When duplicate images sit unchecked in a public database, they waste storage, skew search results, and — in legally sensitive cases involving copyright or cultural sensitivity — create genuine liability.

Who Is Raising Concerns, and Why Now

At the centre of the discussion is the Australasian Preservation Conference, which met in Melbourne in May 2026, drawing delegates from institutions including the Public Record Office Victoria in North Melbourne and the City of Melbourne's own archive unit based on Flinders Lane. Presenters flagged that duplicate image proliferation had become one of the top three data-quality problems facing mid-sized public collections, according to a survey of conference delegates circulated at the event.

The issue is not merely administrative. Duplicate images in heritage collections can misrepresent provenance — assigning the same photograph to two different historical events, for instance — and can distort Indigenous cultural records, a concern raised publicly by practitioners working with First Nations communities in Fitzroy and the inner north. The Australian Institute of Aboriginal and Torres Strait Islander Studies has published guidance on cultural sensitivity in digital collections, and Melbourne-based archivists say local institutions are trying to align with those frameworks while managing the practical backlog of unresolved duplicates.

Technology vendors have moved into the space aggressively. Several companies are now pitching perceptual hashing tools — software that identifies visually similar images even when file names or metadata differ — directly to Victorian councils and TAFE libraries. The Victorian Government's Digital Victoria unit, headquartered on Collins Street, has been reviewing procurement guidance for these tools, though no formal policy has been published as of the date of this article.

Practical Pressure on Local Institutions

RMIT University's library, operating across multiple campuses including the central City campus on Swanston Street, began a structured duplicate-image audit of its research repository in February 2026. The project targets an estimated 14,000 flagged image pairs across three years of digitised collections. Librarians working on the project have described the process as labour-intensive even with semi-automated tools, noting that human review remains essential where images are visually similar but contextually distinct.

The Victorian Collections platform — a state-funded aggregator hosting digital objects from more than 200 museums, galleries and historical societies across Victoria — updated its contributor guidelines in March 2026 to explicitly address duplicate submissions. The revised guidelines ask contributing organisations to run basic deduplication checks before uploading, and to flag intentional duplicates, such as multiple prints of the same photograph held by different institutions, with standardised metadata fields.

Advocates in the sector argue that voluntary guidelines are insufficient. Without mandatory standards tied to funding agreements, they say, smaller organisations in suburbs like Dandenong and Sunshine — which lack dedicated digital preservation staff — will continue uploading unchecked batches, compounding the problem for any future consolidation effort.

The cost of inaction is not trivial. Cloud storage bills for Victorian Collections contributors have risen alongside collection growth, and duplicates directly inflate those costs. Sector estimates, shared at the May conference, suggested deduplication across a mid-sized regional collection of 50,000 images could reduce storage overhead by between 15 and 30 percent, though the figure varies sharply depending on collection type.

The next concrete milestone is a working group report due to the State Library Victoria board in September 2026, which is expected to recommend whether Victoria should develop a sector-wide duplicate image policy or defer to emerging national standards from the Australian Library and Information Association. Institutions watching that process are being advised to document their current workflows now, so they can demonstrate compliance — or flag resource gaps — when guidance eventually lands.