The Numbers Don't Lie: Melbourne's Duplicate Image Problem Is Costing Councils and Businesses More Than They Realise

Storage costs. Compliance exposure. Wasted staff hours. The problem of duplicate digital images across Melbourne's councils, cultural institutions and small businesses has been building quietly for years, and the numbers are now large enough to demand attention.

Organisations running digitised photo libraries typically find that between 25 and 40 per cent of stored image files are exact or near-exact duplicates, according to published benchmarks from digital asset management industry bodies. For a mid-sized council managing 80,000 image files — a realistic figure for an inner-Melbourne municipality that has been digitising planning records, event photography and heritage documentation since the early 2000s — that translates to tens of thousands of redundant files sitting on servers that cost real money to maintain.

What Duplication Actually Costs in Practice

Cloud storage in Australia averaged roughly $0.025 per gigabyte per month on standard commercial tiers as of mid-2026. A library of 80,000 high-resolution images can easily consume 4 to 6 terabytes. If 30 per cent of that is duplicated data — a conservative estimate — an organisation is potentially paying for close to 1.5 terabytes of unnecessary storage every single month, year after year. That is before accounting for backup systems, which typically mirror primary storage at least twice.

At the City of Melbourne's Docklands office and at the Victorian Archives Centre on Macarthur Street in East Melbourne, staff working across records management and communications have grappled with versions of this problem as departments push to consolidate legacy storage systems. Neither institution is alone. The State Library Victoria on Swanston Street, which completed a major digitisation drive across its newspaper and photographic collections between 2018 and 2024, publicly documented the complexity of deduplication as part of its digital preservation framework work — a challenge common to institutions holding millions of assets built up over decades.

For smaller operators — the Brunswick or Fitzroy design studio running a commercial stock library, or the Carlton-based production company managing client campaign assets — the problem is less about raw gigabytes and more about legal exposure. Copyright law in Australia does not distinguish between an intentional and an accidental image republication. An image pulled from an unaudited, duplicate-heavy library and reused in a client campaign without checking its licensing status can generate a copyright claim regardless of how the duplication happened internally. The Australian Copyright Act 1968 places the liability squarely on the publisher or user, not on the software that failed to flag the redundancy.

The Tools Exist — the Adoption Rate Is the Problem

Automated deduplication tools — software that scans libraries using perceptual hashing, a technique that identifies visually similar images even when file names and metadata differ — have existed in mature commercial form since at least 2015. Enterprise-grade digital asset management platforms capable of running perceptual hash comparisons across libraries of 100,000-plus files are available on annual licences ranging from roughly $8,000 to $60,000 depending on scale and vendor. Free or low-cost tools exist for smaller libraries but require manual configuration.

The adoption gap is real. A 2024 survey published by the Digital Asset Management Society found that fewer than 35 per cent of organisations managing more than 50,000 digital files had implemented any form of automated duplicate detection. The majority relied on manual folder conventions or naming standards — approaches that break down quickly as teams grow and remote file contributions increase.

For Melbourne organisations now facing pressure to cut operational costs while managing expanding digital output — particularly in a year when AI-generated imagery has flooded internal content pipelines — the audit case has never been stronger. The first practical step is a file count audit: knowing how many images you hold, across how many storage locations, is the baseline. The second is a perceptual hash scan to establish your duplication rate. For most organisations that have never run one, the result will be uncomfortable.

Consulting firms with digital asset practices operating in Melbourne's CBD, including several based in the Bourke Street and Collins Street precincts, have reported a marked uptick in deduplication audit inquiries through the first half of 2026 — which at least suggests the sector is starting to take the numbers seriously.