How Milan's Digital Archives Ended Up Full of the Same Image Twice — And What's Being Done About It

Milan's municipal digital archive, managed through the Comune di Milano's cultural services directorate, contains an estimated 40 percent rate of duplicate or near-duplicate image files across its publicly accessible collections — a figure that has quietly ballooned over more than a decade of fragmented digitisation efforts, according to internal reviews presented to city councillors earlier this year.

The problem matters now because the stakes have never been higher. With the Milan-Cortina 2026 Winter Olympics opening ceremonies less than six months away, the city's image infrastructure — from promotional assets distributed to international broadcasters to the digital catalogues used by the fashion and design sector — is under scrutiny it has rarely faced before. Duplicate images inflate storage costs, slow retrieval systems, and, more critically for a city that trades on aesthetic precision, risk distributing outdated or low-resolution versions of key visuals to global partners.

How the Duplication Built Up

The roots of the problem stretch back to roughly 2011, when the Comune di Milano began parallel digitisation programmes without a unified metadata standard. The Biblioteca Nazionale Braidense on Via del Senato ran its own ingestion pipeline. The Pinacoteca di Brera catalogued separately. The city's planning office, managing visual records tied to the Porta Nuova urban regeneration project, used a third system entirely. Each institution uploaded assets independently, often scanning the same source photographs from regional newspaper archives or event portfolios multiple times without cross-referencing what already existed.

The fashion economy compounded the issue. Milan Fashion Week, coordinated through Camera Nazionale della Moda Italiana, generates tens of thousands of runway images every season. Licensing agreements between photographers, brands, and the city's promotional arms — including Visit Milan, the official tourism body — meant the same images entered multiple systems under different filenames, different compression settings, and sometimes different rights classifications. By the time the city's IT department began a formal audit in early 2024, the Porta Nuova development zone alone had more than 12,000 image records in the planning archive, with independent analysis suggesting roughly 4,800 of those were functional duplicates of assets already held elsewhere.

The Push Toward a Fix

The practical consequences showed up most visibly along Corso Como and in the Brera design district during the 2025 edition of the Salone del Fuorisalone, when digital kiosk installations in both neighbourhoods pulled competing versions of the same venue photographs — one correctly geotagged, one not — causing display errors that required manual correction across 34 public-facing terminals over two days.

The Lombardy regional government and the city administration, despite their well-documented political differences, agreed in March 2026 on a joint technical protocol for image deduplication across shared cultural databases. The protocol, backed by a regional technology fund of €2.3 million, mandates the use of perceptual hashing standards — a method that detects visually identical images even when filenames or file formats differ — across all publicly funded digital repositories by December 2026. The Politecnico di Milano's digital systems research group is providing technical oversight.

For institutions along Via Brera and in the Navigli district, where smaller design studios and galleries feed assets into city-sponsored promotional platforms, the immediate practical step is registration with the new centralised asset portal, which opened in beta form on June 15. Studios with existing catalogues of fewer than 500 images can complete migration in a single session; larger collections require a scheduled intake appointment through the Comune's digital services office at Via Larga 12. The December deadline is firm, with non-compliant institutions losing automatic inclusion in city-distributed promotional materials — a meaningful pressure point for anyone hoping their work features in Olympics-adjacent campaigns this winter.