How Istanbul's Duplicate Image Problem Became a Crisis in Plain Sight

Istanbul's digital infrastructure has a clutter problem. Across municipal servers, tourism promotion portals and cultural heritage catalogues, the same images of the Galata Tower, the Grand Bazaar and the Bosphorus shoreline appear dozens — sometimes hundreds — of times under different file names, different metadata tags and different licensing designations. The Istanbul Metropolitan Municipality's digital assets directorate acknowledged the scale of the issue in a 2025 internal audit review, which flagged redundant image files as a drain on storage resources and a source of legal ambiguity over usage rights.

The timing matters. Istanbul is in the middle of its most aggressive digitisation push in a decade. The municipality's BELBIM technology subsidiary has been rolling out expanded e-government services since 2023, and the Culture and Tourism Ministry's regional office has been uploading historical photography collections tied to the Fatih and Beyoğlu restoration corridors. Every new project layered onto an already disorganised archive made the duplication worse.

How the Archive Got So Crowded

The roots of the problem stretch back to the early 2010s, when separate municipal departments — parks, heritage, transport, tourism — began building their own digital photo libraries independently. The Fatih Sultan Mehmet Foundation University's digital conservation lab, which has partnered with the municipality on several Sultanahmet-area documentation projects, flagged interoperability failures as early as 2018. Different departments used incompatible tagging systems. A photograph of the Yeni Cami taken by a municipality photographer in 2014 might exist simultaneously in the transport department's streetscape archive, the tourism office's promotional folder and a heritage survey database, each copy carrying a different caption and, in some cases, a different attributed photographer.

The problem accelerated after 2020 when pandemic-era remote working pushed more staff to pull images from shared drives without formal check-out procedures. By the time the BELBIM audit was commissioned, the municipality's primary image repository reportedly contained file duplication rates that internal reviewers described as operationally unsustainable — though the precise figure from that audit has not been made public. What is known is that the Istanbul Metropolitan Municipality budgeted roughly 12 million Turkish lira for digital asset management improvements in its 2025 fiscal plan, a line item that appeared for the first time in that year's budget documentation.

Tourism operators along İstiklal Caddesi and around the Kapalıçarşı district have felt the downstream effects. Travel agencies and licensed tour operators who draw on the municipality's open image portal for promotional material have repeatedly encountered conflicting licensing notices on identical photographs. In at least one documented case reported by the Beyoğlu Chamber of Commerce, a local travel firm was sent a licensing query over an image it had legally downloaded from a municipal portal — because a duplicate copy of the same photograph existed elsewhere in the system under different rights metadata.

What Fixing It Actually Requires

Digital asset management specialists familiar with large municipal projects point to three recurring failure points: no single ownership authority over the archive, no mandatory deduplication step on upload, and no retroactive cleaning of legacy files. Istanbul has all three. The BELBIM roadmap for 2026, which was presented to the Istanbul City Council's technology committee in March, includes a phased deduplication program using hash-matching software — a standard tool that compares files at the binary level to identify identical copies regardless of file name or metadata.

Phase one, covering the tourism and heritage collections, was scheduled to begin in the second quarter of 2026. Phase two, targeting transport and urban planning archives, is pencilled in for early 2027. For businesses and cultural institutions that rely on the public image portal, the practical advice for now is straightforward: cross-check any image downloaded from Istanbul's municipal portals against the BELBIM licensing registry before publication, and flag discrepancies directly to the digital services help desk rather than assuming the first result is the authoritative one. The cleanup is underway, but the archive accumulated fifteen years of disorder. It will not resolve itself by summer.