Cairns Regional Council's digital records team has identified more than 14,000 duplicate image files sitting inside its content management system, a backlog that has accumulated over at least eight years of inconsistent file-naming practices and multiple platform migrations. The figure, drawn from an internal audit completed in the June 2026 quarter, underscores a data hygiene problem that is quietly inflating storage costs and slowing down communications staff who manage everything from Esplanade event promotions to reef tourism campaigns.
The timing matters. Council is mid-way through a broader digital transformation program tied to its 2024–2028 Corporate Plan, which includes a push to centralise public-facing content across its website, social channels, and the Cairns app. Carrying thousands of redundant files into a new platform multiplies the cost of that migration and increases the risk of outdated or incorrect imagery — including superseded flood zone maps and old infrastructure photos — resurfacing in official publications.
What the Numbers Actually Look Like
Of the 14,000-plus duplicates identified, roughly 4,200 relate to imagery from the Cairns CBD and the Wharf Street precinct, reflecting heavy documentation of that area during the Cairns Shipping Development Project approvals process between 2018 and 2022. A further 2,800 files are duplicate drone photographs of the Trinity Inlet, many captured during successive cyclone preparedness assessments funded under the Queensland Resilient Homes Fund. Staff at Council's Spence Street administration building have been manually flagging files since February, a process that the audit estimated was consuming approximately 1.4 full-time equivalent hours per week across the communications and records teams combined.
Storage is not free. Council's current contract with its cloud hosting provider — a deal reviewed in late 2024 — prices excess storage above the base allocation at a per-gigabyte rate that, according to budget documents tabled at the March 2026 ordinary meeting, contributed to a $23,000 overspend in the ICT operational budget line for the 2024–25 financial year. Duplicate image files were cited as a contributing factor in that budget note, though not the sole cause. The audit's conservative estimate puts redundant image data at around 180 gigabytes of wasted storage, a figure that grows every time staff upload a file without checking whether an identical version already exists.
The Cairns Libraries network, which manages its own digital image collection for local history purposes across branches including the Cairns City Library on Abbott Street and the Gordonvale branch, faces a parallel but distinct version of the problem. Its collection of digitised First Nations cultural photographs — held under protocols developed with the Gimuy Walubara Yidinji and Yirrganydji peoples — requires particularly careful deduplication, because replacing or deleting a file without proper provenance checking can have cultural and legal consequences under Queensland's cultural heritage framework.
How the Clean-Up Is Being Approached
Council's ICT and Records Management teams are piloting automated deduplication software across a subset of 3,000 files in the first instance, with the trial running through to 30 September 2026. The software flags probable duplicates based on file hash matching and metadata comparison rather than visual similarity alone, which means near-identical images taken seconds apart — common in drone survey work — are not automatically deleted without human review.
For ratepayers, the practical upshot is straightforward: a cleaner asset library should mean faster turnaround on public communications, fewer instances of wrong images appearing in disaster information materials, and a smoother transition when Council's new digital engagement platform goes live, currently scheduled for the first quarter of 2027. Staff in the communications team based at the Cairns Civic Theatre precinct have been advised that the full deduplication project, including manual review of flagged files, is expected to take until mid-2027 to complete across all departments. That timeline assumes the trial software proves reliable enough to scale — a finding the ICT team will report back to Council's Infrastructure and Operations Committee in October.
