Wollongong Takes On the Duplicate Image Problem — and the World Is Watching

Wollongong City Council's digital archive team confirmed this week that a structured audit of duplicate images across its public-facing platforms — including heritage records, planning portal submissions and tourism libraries — is now past the halfway mark, with several hundred redundant files already removed or consolidated since the program began in January 2026.

The timing matters. Sydney recorded its hottest June since 1859 this week, and the heat is pushing councils across New South Wales to accelerate digital infrastructure work during quieter in-person service periods. For Wollongong, that seasonal window has become an opportunity to tackle a problem that digital archivists have flagged for years: duplicate images quietly bloating storage costs, muddying search results and, in planning contexts, occasionally attaching the wrong photograph to the wrong development application.

What Wollongong Is Actually Doing

The audit covers material held across at least three distinct repositories — the Wollongong City Library's local studies collection on Burelli Street, the council's development and planning image bank, and the destination marketing library managed in connection with Tourism Wollongong. Staff are using a combination of hash-matching software and manual review, a hybrid approach that archivists at the University of Wollongong's Faculty of the Arts, Social Sciences and Humanities have supported in an advisory capacity.

The University of Wollongong connection is not incidental. The institution's digital humanities researchers have been involved in similar clean-up projects at the State Library of New South Wales, and their proximity to Crown Street and the CBD has made informal collaboration with council staff practical in a way that comparable regional cities — say, Geelong in Victoria or Townsville in Queensland — have found harder to replicate without dedicated funding lines.

Port Kembla's industrial transition is also a driver. BlueScope Steel's move toward green steel production has generated a significant new stream of documentation — environmental assessments, site photographs, infrastructure renders — much of it submitted to council and state agencies in overlapping formats. Duplication in that image bank alone was identified internally as a data management risk, particularly given the volume of planning submissions expected through the Port Kembla Renewable Energy Zone process over the next three years.

How That Compares Globally

Globally, the duplicate image problem is not trivial. The Wikimedia Foundation reported in a 2024 audit that Commons, its shared media repository, contained more than 1.8 million files flagged as potential duplicates — a figure that had grown despite ongoing volunteer review. Amsterdam's municipal archive launched a dedicated deduplication project in 2023 covering roughly 750,000 digitised photographs, budgeting €420,000 for the two-year program. Glasgow City Council completed a similar exercise across its planning portal in late 2025, reducing its active image library by around 22 percent.

Wollongong's program is smaller in absolute terms — the council has not released a total file count or budget figure publicly — but its integration of university advisory support and its focus on active planning documents rather than purely historical archives puts it closer to the Glasgow model than to the largely retrospective Amsterdam approach. That distinction matters in practical terms: catching duplicates in live planning records reduces the risk of administrative error in active development decisions, not just inefficiency in historical storage.

Geelong, often cited as the Australian regional city whose economic trajectory most closely mirrors Wollongong's post-industrial pivot, has not yet announced a comparable structured program, according to publicly available council minutes through June 2026. Townsville City Council's digital services unit did flag image database consolidation in its 2025-26 operational plan, but that work appears focused on the tourism sector rather than planning records.

For Wollongong residents and developers dealing with the council's online planning portal on Burelli Street or through the state's NSW Planning Portal, the practical upshot should be cleaner search results and fewer instances of misattributed site photographs when lodging or reviewing development applications. The council's digital team has indicated the audit is expected to conclude by September 2026, after which a maintenance schedule will determine how frequently the repositories are re-checked. Anyone with a development application currently in progress is advised to confirm directly with council staff that site images attached to their submission are correctly labelled — a simple check that the current audit has made newly relevant.