Melbourne's Public Archives Scramble to Fix Duplicate Image Crisis After Cataloguing Errors Surface This Week

A cataloguing crisis has prompted urgent remediation work at two of Melbourne's most significant public collections this week, after an internal audit identified thousands of duplicate and misattributed images embedded across their digital archives. The Public Record Office Victoria, based on Queensberry Street in Carlton, confirmed the problem is affecting multiple collection databases and that a structured duplicate image replacement program is now active.

The timing is not incidental. Victoria's cultural sector has spent the past three years migrating physical records into digitised repositories, a push accelerated by the state government's Creative State 2025–2028 strategy. That migration — however necessary — introduced compounding errors as batch-upload processes failed to flag identical image files uploaded under different catalogue identifiers. The result: patchy, unreliable records that archivists, researchers and teachers have been quietly complaining about since at least mid-2025.

What the Audit Found

The scale of the problem became clearer this week when the State Library of Victoria, on Swanston Street in the CBD, released preliminary findings from a six-month internal review. Duplicate images — meaning identical or near-identical image files stored under separate catalogue entries — accounted for roughly 12 per cent of newly digitised holdings reviewed in the audit's first phase, according to figures the library published on its institutional website on July 2. That translates to tens of thousands of individual records requiring manual verification or automated replacement before the collections can be considered research-ready.

The Public Record Office Victoria is dealing with a related but distinct problem: images correctly digitised but then replicated across multiple finding aids when records were migrated between database platforms in 2023 and 2024. Staff there have begun a phased replacement process, working suburb by suburb through the historical photograph holdings, starting with inner-north Melbourne collections covering Fitzroy, Collingwood and Brunswick. The office has not yet published a completion date, but internal project documentation seen by The Daily Melbourne indicates the first phase is scheduled to wrap by October 2026.

For researchers, the practical consequence has been real frustration. The Koorie Heritage Trust, which operates a cultural centre on King Street, has flagged to partner institutions that duplicate entries were creating confusion for community members trying to trace family photographs held in public collections. Aboriginal and Torres Strait Islander community access to correctly attributed historical imagery carries particular cultural weight, and trust staff have been advocating for prioritisation of affected records within the replacement queue.

The Fix — and What It Costs

Duplicate image replacement is not a simple delete-and-swap operation. Each replacement requires a human check to confirm the substitute image is correctly attributed, properly licensed, and linked to the right metadata. The State Library has contracted additional cataloguing support through its existing partnership with the Australian Library and Information Association's Victorian branch, though the specific contract value has not been disclosed publicly.

Technology is doing some of the heavy lifting. Both institutions are using perceptual hashing tools — software that generates a digital fingerprint for each image and flags near-matches — to identify duplicates before human reviewers step in. The Library's digital infrastructure team adopted this approach after a pilot on its 1890s Melbourne streetscape collection reduced manual review time by an estimated 40 per cent, according to the July 2 report.

The cost of getting this right is non-trivial. Archival digitisation projects across Australia have historically underestimated quality-assurance budgets; a 2024 report by the Council of Australasian Archives and Records Authorities noted that QA typically consumes between 20 and 35 per cent of total project spend when conducted rigorously.

Researchers and community members who rely on these collections should check with the State Library's reading room — open Monday to Thursday from 10am at the Swanston Street building — whether specific collections are currently under active review. The Public Record Office Victoria is accepting written requests to flag high-priority records via its online access portal. Both institutions say public-facing search results will carry updated notices once replacement work on individual collections is confirmed complete.