By the Numbers: Wollongong's Duplicate Image Problem Is Costing Councils and Businesses More Than They Realise

Wollongong City Council's digital asset library contains an estimated one image for every 11 residents in the local government area — a figure that sounds impressive until you learn that independent digital audits of comparable regional councils typically find between 30 and 45 per cent of stored image files are functional duplicates. For a city of roughly 220,000 people, that arithmetic adds up to tens of thousands of redundant files sitting on servers, accruing storage and licensing costs year after year.

The issue has sharpened in mid-2026 for a straightforward reason: cloud storage pricing has risen sharply as hyperscale data centre demand surges globally, making the once-negligible cost of keeping duplicate files a genuine line item. Organisations from the University of Wollongong's campus on Northfields Avenue to the small creative agencies clustered around Crown Street in the CBD are confronting the same problem — bloated image libraries that nobody has had the time or mandate to properly clean.

What the Data Actually Shows

Digital asset management consultants who work across NSW regional markets say the average mid-sized government or institutional client discovers between 28,000 and 60,000 duplicate or near-duplicate image files during a first-pass audit. Near-duplicates — slightly cropped or recoloured versions of the same original — are often harder to catch than exact copies and account for roughly 60 per cent of the redundant file count in most audits, according to published research from data management firm Iron Mountain's 2025 annual benchmark report.

Storage is only part of the cost. When communications teams at organisations like Wollongong City Council or Illawarra Shoalhaven Local Health District publish duplicate images across digital platforms — the same photo of, say, the Crown Street Mall precinct appearing under four different file names — it creates metadata inconsistencies that can compromise search indexing, accessibility compliance and Freedom of Information responses. The NSW Government's Digital Information Security Policy, updated in 2024, explicitly flags uncontrolled asset duplication as a records management risk.

For commercial operators in the Port Kembla industrial corridor, the stakes are different but equally concrete. BlueScope Steel, which is managing an extensive photographic and technical illustration archive as part of its green steel transition documentation, faces a specific challenge: engineering images that are visually similar but technically distinct — different blast furnace configurations, different emissions readings — can be misidentified as duplicates by automated deduplication software. Getting that wrong is not a filing inconvenience; it is a potential compliance failure.

Local Organisations Starting to Act

The University of Wollongong's library and IT divisions have been piloting a perceptual hashing deduplication tool across its research image repository since the start of 2026, according to publicly available procurement notices on the NSW eTendering portal. Perceptual hashing works by converting images into compact numerical fingerprints that capture visual similarity rather than exact byte-for-byte matches — meaning two photos of Flagstaff Hill taken a second apart on different cameras will register as duplicates even though their raw file data differs.

The cost of not acting is quantifiable. Cloud object storage on AWS S3 — the dominant platform for NSW government and large institutional clients — is priced at approximately USD $0.023 per gigabyte per month for standard storage as of July 2026. A library of 100,000 high-resolution images averaging 8 megabytes each occupies roughly 800 gigabytes. If 35 per cent of those are duplicates, the organisation is paying for approximately 280 gigabytes of pure redundancy every single month — around USD $6.44, which sounds trivial until you multiply it across dozens of departments, years of accumulation, and egress fees that apply every time a file is retrieved.

For Wollongong businesses and public bodies looking to start, the practical path is straightforward. Run a perceptual hash audit before touching anything — tools including open-source options like ImageDedup are freely available. Establish a single source-of-truth folder structure tied to named projects or locations, such as the Innovation Campus on Squires Way or specific Port Kembla development sites. Set a retention policy before the next financial year begins on 1 July 2027. The data problem will not shrink on its own; digital libraries only ever grow until someone decides they should not.