Barcelona's Digital Archive Crisis: What Officials, Experts and Key figures Are Saying About Duplicate Image Replacement

Barcelona's municipal digital archive holds more than 4.2 million images accumulated over two decades of public record-keeping, tourism promotion and urban planning documentation — and a growing number of technologists and city administrators say a significant portion of that catalogue is redundant, degraded or outright duplicated. The question of how to fix it, and who pays, is now a live debate inside the Ajuntament de Barcelona and across the city's innovation ecosystem.

The issue has moved from backroom IT conversations to something more urgent because of Mayor Jaume Collboni's broader digital-transparency push, which includes the expanded implementation of the Barcelona Digital City strategy. Under that framework, the city committed in 2024 to modernising public data infrastructure across all municipal departments by the end of 2026. With six months left on that clock, the archive problem is no longer an abstraction.

Where the disagreement sits

The core tension is methodological. Staff at the Institut Municipal d'Informàtica (IMI), the body that manages the city's technology systems from its offices near Plaça Sant Miquel, have been piloting AI-assisted deduplication tools since early 2025. The approach uses perceptual hashing — a technique that identifies near-identical images even when file names or metadata differ — to flag candidates for removal or consolidation.

Critics inside the archival profession argue that automated deletion is too blunt an instrument for a civic collection. The Col·legi Oficial de Bibliotecaris-Documentalistes de Catalunya, based in the Gràcia district, has been vocal in professional circles about the risks of losing contextually significant images that happen to share visual similarity. The concern is not hypothetical: a photograph of the same stretch of La Barceloneta beach taken on two different dates might look identical to an algorithm but carry different legal or historical weight depending on what was happening in the city at the time.

Experts in the Barcelona startup scene, particularly those clustered around the 22@ innovation district in Poblenou, offer a different reading. Several companies operating there have built commercial deduplication pipelines for media clients across Europe, and the consensus among that community leans toward hybrid models — automated flagging followed by human review — rather than either full automation or full manual audit, which at current staffing levels would take an estimated three to four years to complete.

Money, governance and what comes next

Cost is the unavoidable subtext. A full manual review of a 4-million-plus image archive, based on comparable projects undertaken by the City of Amsterdam in 2023 and the Generalitat de Catalunya's own digital heritage unit, would run well into the hundreds of thousands of euros. The IMI's current annual technology budget, as reported in the Ajuntament's 2025 municipal accounts, is approximately €78 million — substantial, but already committed across dozens of competing infrastructure projects including the city's fibre-optic expansion and cybersecurity upgrades.

The tourist tax revenue question has also entered the conversation sideways. Barcelona's expanded taxa turística, which the Collboni administration raised in 2024, generates funds partly directed toward sustainable urban infrastructure. Some voices in the digital-governance community have suggested that a portion of that income stream could logically support civic digital maintenance — an argument that has gained no formal traction at city hall but circulates persistently in policy seminars held at institutions like the Centre de Cultura Contemporània de Barcelona on Carrer de Montalegre.

What happens in the next six months will likely depend on the outcome of a technical review currently being finalised by the IMI. If the review endorses the hybrid AI-plus-human model, the city will need to procure external support — which means a public tender, probably before September, that local 22@ firms are expected to compete for. If the review recommends a phased approach prioritising only the tourism and urban-planning image sets rather than the full archive, the timeline extends but the political pressure eases. Either way, the broader principle being established here matters: how Barcelona decides to govern its own visual record will set a precedent for other Catalan municipalities watching the process closely.