Milan's Digital Archives Are Full of Duplicate Images — And Officials, Experts and Archivists Are Finally Talking About It

Milan has a duplicate image problem. Thousands of redundant digital photographs — many of them identical files saved under different names — are clogging the municipal and institutional archives that underpin everything from tourism promotion to Olympic venue documentation for the Milan-Cortina 2026 Games. Now a growing chorus of professionals is demanding the city adopt a systematic approach to so-called duplicate image replacement before the Winter Olympics opening ceremony in February draws global scrutiny to the city's digital infrastructure.

The pressure is real and the timeline is tight. With Milan-Cortina 2026 preparation accelerating across venues from the PalaItalia Santa Giulia arena in the Rogoredo district to the Palazzo del Ghiaccio on Via Piranesi, official bodies responsible for visual documentation are confronting storage bottlenecks and metadata chaos that have built up over at least a decade of uncoordinated digital asset management. The issue surfaced publicly in June when the Comune di Milano's culture directorate acknowledged during a council session that its shared image repository contained an estimated 40 percent redundancy rate across approximately 1.2 million stored files.

What the Experts Are Saying

Digital archivists and technology consultants working with Milanese institutions are not pulling punches. Specialists at Politecnico di Milano's design and communication faculty have been advising both the Fondazione Fiera Milano and the city's urban development office on asset deduplication workflows since early 2025. Their position, outlined in a working paper circulated in April, is that hash-based duplicate detection — a process that fingerprints each image file and flags identical copies regardless of filename — should be mandatory for any public institution managing more than 500,000 digital assets. The Comune currently does not require it.

The fashion sector, which drives an outsized share of Milan's economy and depends heavily on controlled image libraries, has been ahead of municipal government on this. Several major houses headquartered in the Quadrilatero della Moda — the rectangle bounded by Via Montenapoleone, Via della Spiga, Via Manzoni and Corso Venezia — implemented automated duplicate detection across their digital asset management systems between 2022 and 2024, following a wave of leaked or misattributed campaign imagery that caused brand disputes. Industry observers note the contrast with public institutions, which have moved far more slowly despite handling heritage images worth considerable cultural and legal weight.

The Biblioteca Ambrosiana, one of Europe's oldest libraries and a major repository of digitised historical visual material on Piazza Pio XI, is among the institutions most frequently cited in the debate. Curators there have publicly supported a proposed regional protocol that would establish shared deduplication standards across Lombardy's cultural heritage bodies. The Regione Lombardia's culture department is understood to be reviewing that proposal, though no adoption date has been confirmed. Separately, the Museo del Novecento at Piazza del Duomo flagged earlier this year that its digital exhibition archive had grown to over 300,000 images, with internal estimates suggesting roughly one in five files is a functional duplicate consuming storage that costs the institution approximately €18,000 annually in cloud infrastructure fees.

What Comes Next — And What Institutions Should Do Now

Officials at the Comune di Milano have not committed to a specific remediation programme, but the pressure from the Olympic timeline is forcing the conversation. The city's digital transformation office is reportedly in talks with at least two software vendors about a tender for deduplication services, with a budget envelope understood to be in the range of €300,000 to €500,000. A decision is expected before the end of September 2026 — leaving little margin for implementation before the Games begin.

Experts advising both public and private clients in Milan are recommending institutions not wait for a city-wide mandate. The practical advice circulating among digital archivists right now: audit your repository for duplicate content using open-source tools before any major migration or public-facing campaign launch, establish a single master file standard with consistent naming conventions tied to creation date and subject metadata, and build in a human review stage before automated deletion of any file flagged as a duplicate. For institutions holding irreplaceable heritage images, that last step is non-negotiable. A duplicated photograph of a Porta Nuova construction phase is recoverable. A misidentified and deleted sixteenth-century engraving is not.