Zurich's Digital Archive Scramble: What Officials, Experts and Key Figures Are Saying About the Duplicate Image Problem

Zurich's public institutions are sitting on bloated digital archives riddled with duplicate images, and the people responsible for managing them are no longer staying quiet about the cost. Administrators at the Stadt Zürich's central IT directorate, archivists at the Stadtarchiv on Neumarkt, and researchers at ETH Zurich have all flagged the same underlying problem in recent months: unchecked image duplication is consuming storage budgets, slowing down public-facing databases, and quietly eroding the integrity of digital collections that citizens and researchers rely on every day.

The issue has gained sharper urgency in 2026 as city agencies prepare for the next phase of the Smart City Zürich programme, which aims to consolidate digital infrastructure across departments by the end of the year. When planners began auditing existing data assets, duplicate image files emerged as one of the largest single categories of redundant data. Storage consumption tied to unmanaged image files across several municipal departments has, according to internal planning documents circulated earlier this year, been identified as a meaningful line item in IT operating budgets — though the city has not yet released a specific public figure.

What the Experts Are Actually Saying

Specialists in digital asset management point to a structural problem rather than individual carelessness. At ETH Zurich, researchers working within the university's Scientific IT Services unit have noted that image deduplication tools have existed for years but adoption across Swiss public institutions has lagged behind the private sector, particularly compared to the efficiency standards now common in Zurich's pharmaceutical neighbours along the Glatt Valley corridor. The argument from technical staff is straightforward: without a standardised naming convention and centralised ingestion workflow, every department that handles photography — urban planning, transport, social services — ends up storing the same image three or four times across different servers.

The Stadtarchiv, which holds digitised collections stretching back to the nineteenth century, has been running its own deduplication initiative since January 2026. Staff there have publicly described the challenge as partly technical and partly cultural: teams accustomed to local folder structures resist centralised systems, even when the efficiency gains are demonstrable. The archive sits in a building that also houses other civic memory institutions near the Grossmünster, giving it a symbolic weight that makes the conversation about digital housekeeping feel more consequential than a routine IT upgrade.

At the Kunsthaus Zürich, which completed a major digital cataloguing expansion following its Chipperfield-designed wing opening, curators have spoken at professional conferences about implementing perceptual hashing — a technique that identifies visually identical or near-identical images even when file names differ — to clean up its public-facing online collection. The approach has drawn interest from peer institutions across the German-speaking world.

Practical Steps and What Comes Next

The Stadt Zürich's IT directorate is expected to publish procurement guidelines for deduplication tooling before the end of the third quarter of 2026. That timeline matters because several large digitisation contracts — including one tied to the Stadtbibliothek Zürich's expanded digital lending programme — are scheduled to go live in early 2027. Getting the underlying image management architecture right before those collections go public would prevent the problem from compounding further.

For organisations outside city government, the practical advice from IT specialists is consistent: run a deduplication audit before migrating to any new storage environment, establish a single point of ingestion for photographic assets, and enforce file naming standards at the point of creation rather than retrospectively. Tools capable of processing tens of thousands of image files overnight are now available at price points accessible to mid-sized cultural institutions — a shift from even three years ago when enterprise licensing costs put them out of reach for many civic bodies.

The conversation is not purely technical. With Zurich's housing shortage continuing to dominate political attention and public budgets under pressure, any argument for IT efficiency that translates into real cost savings has an easier path through the city's legislative committees. Digital housekeeping, unglamorous as it sounds, is finding an audience.