Bendigo's Digital Archives Race to Fix a Flood of Duplicate Images This Week

Staff at the Bendigo Regional Archives Centre on Bull Street logged more than 4,200 duplicate image files this week as part of a broader digital collections audit, triggering an accelerated remediation effort that has drawn in volunteers from La Trobe University's Bendigo campus. The discovery, made during routine quality checks on the centre's digitised heritage holdings, is the largest single batch of redundant files the centre has identified in a single audit cycle.

The timing matters. The Victorian Government's Public Record Office Victoria is scheduled to conduct a compliance review of regional collections in August 2026, and institutions holding state-funded digitised material are expected to demonstrate clean, deduplicated asset registers. Centres that cannot account for their digital inventory risk losing access to future digitisation grants under the Regional Collections Digitisation Program, which has directed funding to central Victoria since 2023.

How the Duplicates Accumulated

The problem is not new, but the scale caught archivists off guard. According to internal processes described by the centre, the duplicates built up across three separate ingestion events between 2023 and early 2026, when scanned images from the Goldfields region were imported into the collections management system without automated deduplication checks in place. Each batch contained slightly varied file names — a common byproduct of scanning equipment that auto-increments filenames — which allowed identical images to slip past manual spot-checks.

La Trobe University's Bendigo campus on Bendigo–Maryborough Road has seconded two information management postgraduate students to assist with the cleanup under a formal practicum arrangement. The university runs a Graduate Certificate in Information Management that includes archival practice as a core unit, and the current cohort began field placements across Bendigo in late June. Their involvement means the centre has not had to seek emergency contract staff, keeping costs inside its existing operating budget for the quarter.

The Bendigo Art Gallery on View Street is dealing with a smaller but structurally similar issue. Gallery staff identified roughly 380 duplicate high-resolution images in its collection database — mostly relating to the permanent collection's 19th-century Australian works — after upgrading its collections software in late June 2026. The gallery is aiming to resolve those duplicates before its next public catalogue update, scheduled for late July.

What the Cleanup Involves

Deduplication is not simply deleting files. Archivists must first confirm that at least one master copy of each image meets the required resolution standard — for state heritage material, that is typically 400 dots per inch at full scan size — before any file is marked for removal. Where two copies exist but neither meets spec, both must be flagged for rescanning rather than deletion. That process slows the remediation considerably.

At the Bull Street centre, staff estimate the full cleanup will take until late July to complete. Approximately 60 per cent of the flagged duplicates are straightforward cases where a verified master file already exists in the system. The remaining 40 per cent require manual comparison before any action is taken.

Regional archivists across Victoria have been grappling with deduplication as digitisation volumes rise sharply. The Public Record Office Victoria reported in its 2024–25 annual report that the volume of digital records held by regional institutions increased by 34 per cent over the preceding two years, a pace that has strained quality-control workflows designed for smaller ingest loads.

For community members with a direct stake — family history researchers, local historians, and organisations like the Bendigo Historical Society on Hargreaves Street — the practical advice is straightforward: any image requests submitted to the archives centre before the audit wraps up in late July may take longer than the standard five-business-day turnaround. The centre is asking researchers to submit requests as early as possible and to flag any known duplicates they encounter through the online catalogue, since community sightings have already helped staff prioritise which record groups to audit first.