How Melbourne's Institutions Ended Up With Thousands of Duplicate Images — and What Happens Now

Melbourne's public institutions are sitting on a problem that took roughly twenty years to build: duplicate digital images running into the tens of thousands, spread across incompatible databases at galleries, local councils, state archives and cultural organisations that each digitised their collections independently and rarely checked what their neighbours already had. The reckoning has arrived in the form of tightening storage budgets, a state government push toward shared infrastructure, and open-data standards that make the duplication impossible to ignore.

The issue matters right now because the Victorian Government's Digital Asset Management Strategy, which has been rolling out in phases since 2023, requires agencies to audit and rationalise their digital holdings before migrating to the whole-of-government cloud framework. For cultural institutions in particular, that audit is surfacing redundancies that were invisible when each organisation ran its own server stack. The pressure is compounded by a broader housing-density and urban-renewal push that has accelerated community documentation work — local histories, streetscape photography, migration stories — generating fresh image assets that risk the same duplication problem if nothing changes.

How the Duplication Accumulated

The origins sit in the early 2000s digitisation boom. The State Library of Victoria on Swanston Street received federal Backing Australia's Ability funding in that period and began scanning its photographic collections at scale. Simultaneously, the City of Melbourne's own heritage unit was digitising council records, and organisations like Museums Victoria at Carlton were running parallel projects. Because metadata standards were inconsistent and no shared repository existed, the same photograph — say, a 1960s image of Flinders Street Station shot by a government photographer — could end up catalogued separately at three different institutions under three different file names and three different rights designations.

The Australian Library and Information Association flagged interoperability gaps in its sector-wide digital preservation reports as far back as 2011, but without a funding mechanism to force consolidation, the problem compounded with each successive digitisation grant round. By the time the National Library of Australia's Trove platform expanded its Victorian content partnerships in the mid-2010s, contributing institutions were often uploading images that Trove's own systems already held — sometimes in higher resolution — from an earlier deposit by a different organisation.

Local councils added another layer. Yarra City Council and the City of Port Phillip both ran neighbourhood heritage programs during the 2010s that produced substantial photographic archives of suburbs like Fitzroy, Collingwood, St Kilda and South Melbourne. Neither program was systematically cross-referenced against existing State Library or Museums Victoria holdings at the time of creation.

The Practical Cost and What Comes Next

Storage costs alone have made rationalisation urgent. Enterprise cloud storage pricing in Australia typically runs between $20 and $50 per terabyte per month depending on access tier, and even a mid-sized council heritage archive can run to several hundred terabytes once raw scan files are included. Multiply that across a dozen institutions holding overlapping content and the annual expenditure becomes a policy-level concern, not just an IT footnote.

The Victorian Public Record Office has been piloting a duplicate-detection workflow using perceptual hashing — a technique that matches visually similar images even when file names and metadata differ — across a subset of its digitised photograph collection since late 2024. Early results from that pilot, presented at an internal forum in March 2026, indicated duplication rates in some collection categories were higher than administrators had anticipated, according to documents released under Freedom of Information to The Daily Melbourne.

For institutions navigating this now, the practical path involves three steps: completing the mandatory digital asset audit required under the state's 2023 strategy, engaging with the Public Record Office Victoria's guidance on deduplication workflows, and contributing cleaned metadata to Trove to prevent fresh duplication as new digitisation projects launch. The Australian Digital Alliance, based in Canberra but with strong Victorian membership, has published a free interoperability checklist that several Melbourne institutions have already adopted.

The work is unglamorous. It involves database administrators comparing spreadsheets rather than archivists handling century-old glass plates. But the cultural sector's credibility as a steward of Melbourne's visual record depends on getting this right before the next round of digitisation funding — expected in the 2027 federal budget cycle — arrives and restarts the cycle.