Melbourne's Councils and Tech Experts Weigh In on the Growing Problem of Duplicate Images in Digital Archives

Digital archivists and local government officials across Melbourne are raising the alarm about a surprisingly costly problem: duplicate images embedded in public-facing digital collections and council websites are wasting storage, distorting search results, and in some cases presenting outdated or incorrect visual records to the public. The push to systematically identify and replace these files is now a formal agenda item for several Victorian institutions in the second half of 2026.

The issue has surfaced partly because of a broader push by the Victorian Government to consolidate digital infrastructure across agencies following the 2025 Digital Service Standard review. Institutions that once maintained siloed content management systems are now being asked to merge or align databases — a process that is exposing years of duplicated uploads, redundant image versions, and orphaned files that no longer correspond to current information.

What the Experts Are Actually Saying

Digital preservation specialists at the Australasian Preserves Network, which maintains a working group based partly out of the Fitzroy-based Ethical Technology Forum, describe duplicate image replacement as a deceptively technical challenge. The core problem is not just identifying duplicates — perceptual hashing tools can handle much of that — but determining which version of an image should be designated the canonical replacement. A resized thumbnail, a watermarked version, and an original scan of the same artwork are technically distinct files, even if they represent the same object.

The State Library of Victoria, on Swanston Street in the CBD, holds digitised collections running into the millions of individual image files. Staff there have been working since at least early 2025 on a deduplication audit, according to publicly available project documentation on the Library's website. The process involves both automated flagging and manual curatorial review — a combination that archivists argue cannot be shortcut without risking the permanent loss of contextually significant image variants.

Yarra City Council, which covers inner-north suburbs including Collingwood, Fitzroy, and Richmond, flagged in its 2025-26 digital asset management plan that legacy image duplication across its community services web portal was identified as a maintenance liability. Council officers noted in that publicly available document that the volume of duplicate or near-duplicate images had grown significantly since the portal was relaunched in 2022.

Costs, Tools, and the Practical Headache

Storage is not cheap, even in 2026. Commercial cloud object storage pricing from major Australian providers sits at roughly $25 to $35 per terabyte per month — a figure that accumulates quickly when unmanaged image libraries sprawl into the hundreds of gigabytes. For smaller councils or arts organisations operating on tight budgets, the financial argument for a deduplication program is increasingly hard to ignore.

The Melbourne-based open data advocacy group OpenCivics has publicly argued, through its July 2026 newsletter, that the greater concern is not storage cost but public trust. When a council's website displays an outdated image of a demolished building — because a duplicate of the original file survived a content migration while the updated replacement did not — it erodes confidence in official digital communications. OpenCivics pointed to several Victorian local government websites where this type of content error has been documented through community reports, though it did not name specific councils.

Software options for managing the problem range from open-source tools like digiKam, which is used by several smaller Victorian cultural institutions, to enterprise platforms integrated with content management systems like Drupal and Craft CMS. The Victorian Government's Shared Technology Services unit has reportedly been scoping a centralised solution for agencies under its remit, though no procurement decision has been publicly announced as of July 4, 2026.

For institutions that cannot wait for a centralised fix, archivists recommend establishing a clear versioning policy before any deduplication run — specifying in writing which image attributes determine the preferred canonical file. Conducting audits quarterly, rather than as a one-off exercise, is the approach being recommended by digital preservation trainers at RMIT University's Information Studies program in the Melbourne CBD. Without an ongoing process, the problem tends to regenerate itself within 12 to 18 months of any initial cleanup.