Paris's Battle Over Duplicate Images in the Public Archive: What Officials, Experts and Key Figures Are Saying

Paris city archivists flagged a systemic problem earlier this year: thousands of duplicate or near-identical images have accumulated inside the Bibliothèque historique de la Ville de Paris on Rue de Rivoli, as well as within the digital holdings of Paris Musées, the federation overseeing fourteen municipal collections. The duplicates, accumulated through successive digitisation drives since at least 2018, are now cluttering search results and complicating the post-Olympics legacy push to make the city's visual heritage freely accessible online.

The timing matters. Paris 2024's cultural legacy arm committed to expanding open-access digital resources across the Grand Paris region, and the Mairie de Paris has pledged to accelerate the rollout of its open-data portal, data.paris.fr, through 2026. Bloated, redundant image libraries slow that process and raise storage costs — a practical concern at a moment when the city's digital infrastructure budget is under scrutiny inside the Hôtel de Ville.

What the Experts Are Saying

Specialists in digital heritage management point to several overlapping causes. Multiple scanning campaigns — some conducted by external contractors, others by in-house teams — ran without a unified deduplication protocol. The result, according to documentation reviewed by The Daily Paris, is that some Seine-Saint-Denis neighbourhood photographs taken during preparatory work for the Grand Paris Express appear in the archive under three or four separate catalogue entries, each with slightly different metadata. The Grand Paris Express, now extending lines 15 and 16 through Plaine Saint-Denis and Saint-Ouen, generated an unusually large volume of site documentation photography between 2019 and 2024.

Professionals at the École nationale des chartes, which trains France's archivists and sits on the Rue des Francs-Bourgeois in the Marais, have long argued that municipal institutions need dedicated image-fingerprinting software deployed at the point of ingest, not retrospectively. That recommendation has circulated inside professional circles for several years, but implementation has been uneven across Paris's decentralised collection system.

Elected members of the Paris Council's culture commission raised the issue at a session held in late June, pressing for a clear timetable on remediation. The commission has requested a written response from Paris Musées before the end of July. No formal deadline for completing a deduplication audit has yet been publicly confirmed by the city administration.

The Replacement Question

The more contentious debate is not simply about deleting duplicates — it is about which version of a duplicated image gets retained as canonical and which gets replaced or suppressed. For photographs tied to urban regeneration projects along the Seine's right bank, or documenting the transformation of the Gare du Nord forecourt area, the choice of a preferred image can carry real implications for how public memory of those spaces is constructed.

Paris Musées' open-licence framework, launched formally in 2020, allows any image in the public domain to be downloaded and reused without charge. That policy, covering roughly 150,000 digitised works at last public count, means a wrongly suppressed image is not merely an internal filing error — it becomes a gap in what researchers and journalists can access. Advocates within the heritage sector argue the replacement workflow needs independent oversight, not just internal curatorial decision-making.

The debate also touches on the banlieue inequality agenda. Several of the most duplicated image sets relate to suburban communes now being absorbed into the Grand Paris metropolitan zone. Community groups in Seine-Saint-Denis have previously complained that visual documentation of their neighbourhoods is either absent from major collections or poorly catalogued. A deduplication exercise that prioritises Haussmann-era central Paris imagery over peripheral documentation would deepen that imbalance, critics say.

The Mairie de Paris has until the end of this month to respond to the council commission's inquiry. Archivists and digital heritage advocates say the response will indicate whether the administration treats this as an administrative housekeeping matter or a substantive question of who controls the city's visual record. A formal audit methodology, they say, should be published and open to public comment before any large-scale replacement of images begins.