The City of Ballarat confirmed this week that a remediation project targeting duplicate and low-quality images across its official digital asset management system had entered an active culling and re-cataloguing phase, affecting files linked to tourism campaigns, council planning documents, and the Ballarat Heritage Registers. The work, which began in earnest during the first week of July 2026, follows months of internal review after the volume of duplicate image files across the council's digital library grew to a point that was disrupting publishing workflows and slowing delivery of promotional content to regional tourism partners.
The timing matters. Sovereign Hill, which drew more than 470,000 visitors in the 2024–25 financial year according to figures published by the Ballarat Tourism and Environment Committee, relies heavily on council-supplied image assets for its co-branded marketing with Visit Victoria. When duplicated or incorrectly tagged images end up in shared folders, they risk appearing in the wrong context — a heritage streetscape from Dana Street labelled as a Lydiard Street North precinct shot, for instance, or an internal construction photo mistakenly tagged as a Sturt Street dining precinct promotional image. Both types of errors have been identified in the current review cycle.
What the audit found and where the problems concentrated
The most acute duplication issues surfaced in three asset categories: images of the Ballarat Botanical Gardens in Wendouree, photographs from the 2023 and 2024 Ballarat Begonia Festival, and architectural photography commissioned for the Ballarat Base Hospital redevelopment documentation — the latter being part of the broader Ballarat Health Services capital works program funded under the Victorian Health Infrastructure Authority. In some folders, the same image existed in up to seven separate versions with slightly different file names, resolutions, or embedded metadata, making automated search tools return confusing or redundant results.
The remediation team — drawn from the council's ICT and Communications divisions — is using a combination of perceptual hash matching software and manual review to flag probable duplicates before any file is permanently removed. Perceptual hashing compares images by their visual content rather than file size or name, meaning near-identical photographs taken seconds apart can be identified even if they were cropped or exported differently. The process is not instantaneous. As of Friday, July 4, the team had processed approximately 40 per cent of the priority folders, with the full library — estimated internally at more than 38,000 individual image files — expected to reach a clean baseline by late August 2026.
What comes next for local organisations relying on those assets
The practical downstream effect will be felt most immediately by arts and cultural organisations that draw on council image libraries under existing partnership agreements. The Art Gallery of Ballarat on Bridge Street Mall, which uses council-supplied photography for joint grant applications to Creative Victoria, was among the bodies notified this week that some shared folders would be temporarily locked from external access while the deduplication work is completed. The gallery has been advised to use its own independently held image archive for any applications due before August 15.
Sovereign Hill's marketing team was given similar guidance. The organisation has been redirected to a curated shortlist of approximately 1,200 pre-approved images that have already passed the hash-matching review — a holding library the council expects to expand progressively as each category is cleared.
For community groups and local media outlets that routinely request images from the council's public-facing Flickr-linked repository, the practical advice from the City of Ballarat this week is to submit formal image requests through the council's online asset portal at least five business days in advance until the end of August, rather than relying on the self-service download function, which remains partially suspended. The council has not announced any budget figure for the remediation project, and the total cost of the cleanup has not been disclosed in public documentation reviewed this week. The longer-term plan, according to council communications published on the City of Ballarat website, is to migrate the cleaned library into a new digital asset management platform before the 2026–27 financial year closes.