How Milan's Digital Archives Ended Up Full of the Same Image Twice: The Long Road to Duplicate Replacement

Milan's major cultural and civic institutions are sitting on a problem they mostly built themselves. Across the city's digitised archives — from the Pinacoteca di Brera's online catalogue to the Comune di Milano's public image database — duplicate images have quietly accumulated for years, the residue of rushed digitisation campaigns, incompatible software systems, and staff turnover that left nobody minding the metadata. The push to clean up those redundant files is now urgent, with the Milan-Cortina 2026 Winter Olympics drawing a global audience to the city and institutions anxious to present polished, functional digital fronts.

The timing matters. Milan spent much of the period between 2018 and 2024 in an accelerated digitisation sprint, driven partly by European Union cultural heritage funding streams and partly by the city's own ambitions to position itself alongside Paris and Amsterdam as a model of the connected creative city. The result was volume without consistency. Different departments within the same institution uploaded the same photograph under different file names, different cropping ratios, or different colour profiles. Over time, those small discrepancies compounded into archives where a single iconic image of, say, the Galleria Vittorio Emanuele II might exist in a dozen near-identical versions, none flagged as the canonical one.

The Infrastructure Behind the Clutter

The root cause is institutional rather than technical. When the Biblioteca Nazionale Braidense on Via del Senato began its digitisation programme in earnest around 2019, it was working with a different content management system than the one adopted by the Museo del Novecento at Piazza del Duomo two years later. Neither system spoke fluently to the other, and neither was initially configured to run automated duplicate-detection checks. Staff manually uploaded assets, and without a shared taxonomy or a city-wide digital asset management protocol, duplication was essentially built into the process from day one.

The Porta Nuova district, which houses several of the city's newer tech and creative economy offices, became a testing ground for more disciplined digital asset practices after 2022, when a cluster of fashion and design firms — operating out of the Gioia and Varesine zones — began demanding cleaner image libraries from their municipal and institutional partners. The fashion economy here is not abstract: the Sistema Moda Italia trade body has previously reported that Italy's textile and fashion sector generates revenues well above €90 billion annually, and Milan sits at the centre of that supply chain. When luxury houses need rights-cleared, non-duplicated imagery for global campaigns, sloppy civic archives become a commercial liability, not just an administrative nuisance.

What Clean-Up Actually Looks Like

The practical work of duplicate image replacement involves more than deleting redundant files. Institutions must first audit their holdings — a process that, for a mid-sized archive of roughly 50,000 assets, can take a dedicated team several months. The Fondazione Prada, which operates its archive out of its Largo Isarco campus in the Ortomercato area, completed an internal audit of this kind in late 2024 and found the exercise forced a broader rethink of how provenance and licensing data were attached to image files. The lesson, widely circulated in Italian archival circles, was that replacing a duplicate is only half the job; the replacement file must carry clean, complete metadata or the problem simply recurs.

For civic institutions tied to the Milan-Cortina 2026 preparations, the deadline pressure is real. The Games open in February 2026, and the promotional digital infrastructure — websites, press portals, accreditation systems — is being finalised now. Duplicate or mismatched images in those systems create downstream problems: broken links, inconsistent branding, and in some cases rights disputes if the wrong version of a licensed photograph is published. The Comune di Milano's digital services directorate has been working through 2025 and into this year to consolidate the city's fragmented image repositories into a single governed system, a project that has been publicly referenced in council budget discussions but whose full scope and cost remain subject to ongoing procurement decisions.

For institutions still mid-audit, the practical advice from those further along the process is consistent: start with the most publicly visible collections, establish a single authoritative version of each image before deleting anything, and build duplicate-detection into upload workflows rather than treating it as a periodic clean-up task. The clutter did not arrive overnight, and neither will the solution — but with the world's cameras pointed at Milan this winter, the calendar for getting it right is not flexible.