Cairo's Archives Are Drowning in Duplicate Images — Here's How the City Compares to Amman, Lagos and Istanbul

Thousands of duplicate image files are clogging the digital archives of Cairo's major public institutions, slowing database searches and inflating storage costs at a moment when Egypt's tight foreign-currency budget makes cloud infrastructure unusually expensive. The Egyptian National Library and Archives — headquartered on Corniche El Nil in central Cairo — confirmed this year that a backlog digitisation drive launched in 2023 produced an estimated 40 percent redundancy rate across its photographic holdings, meaning roughly four in ten image files are near-identical copies of items already catalogued.

The problem is not unique to Egypt, but its scale here is shaped by specific local pressures. The pound devaluation that accelerated after the IMF programme's exchange-rate conditions took hold has made dollar-denominated cloud storage substantially more expensive for government agencies billing in Egyptian pounds. That cost pressure pushed several institutions to delay automated de-duplication software licences, allowing the redundancy backlog to compound through 2024 and 2025. Meanwhile, a parallel digitisation project run through the New Administrative Capital's planned Digital Egypt Archive facility has been held up by construction scheduling, leaving the Cairo-based institutions to manage the overflow alone.

What Cairo Is Actually Doing About It

The most concrete response so far has come from two institutions. The Bibliotheca Alexandrina's Cairo liaison office, operating out of Zamalek, began piloting an open-source perceptual hashing tool in March 2026 to flag near-duplicate image pairs before they enter the main repository. Perceptual hashing compares images by their visual fingerprint rather than their file names or metadata, catching re-scans that a simple checksum would miss. The pilot covers roughly 120,000 images from the library's Egyptian press photography collection. The Cairo Atelier in Garden City — which holds one of the city's more accessible collections of twentieth-century Egyptian visual art — launched a smaller-scale manual review programme in January 2026, hiring six part-time cataloguers to physically cross-check flagged files.

Neither effort has a publicised completion date, and neither institution has released formal figures on how much storage space the duplicates are consuming. By contrast, Istanbul's Atatürk Library announced in February 2026 that an eighteen-month de-duplication project had cleared 2.3 million redundant files from its digitised Ottoman-era photograph collection, freeing 11 terabytes of server space and reducing annual storage costs by roughly 180,000 Turkish lira. Lagos State's public digitisation programme, running through the Lagos State Library Board, adopted mandatory hash-checking at point of upload in 2024, meaning duplicates are blocked before they enter storage rather than cleaned up afterward — a prevention-first model that archivists in Cairo have cited in internal planning documents as worth replicating.

The Practical Stakes for Researchers and Tourists

Duplicate image clutter has real consequences beyond server bills. Researchers at Cairo University's Faculty of Archaeology, on Gameat Al Qahera Street in Giza, have reported spending additional hours manually filtering search results when querying the National Archives' online portal. Tourists trying to use Egypt's official cultural heritage app — relaunched in late 2024 to support the Grand Egyptian Museum opening at Giza — encounter search results that return the same monument photograph multiple times, a user-experience flaw that travel bloggers flagged publicly on Arabic-language platforms throughout early 2026.

Amman's Greater Amman Municipality faced an identical complaint when it digitised Jordan's architectural heritage records between 2020 and 2022. It resolved the problem by contracting a single vendor to handle both scanning and de-duplication simultaneously, keeping the redundancy rate below five percent. Cairo's fragmented institutional landscape — with the National Archives, the Bibliotheca Alexandrina network, individual ministry collections and the Grand Egyptian Museum all maintaining separate repositories — makes a single-vendor solution politically and logistically harder to organise.

The most immediate step available to Cairo's institutions, according to the open-source archiving community's published guidance on the International Internet Preservation Consortium website, is adopting hash-checking at ingest rather than as a retrospective clean-up task. The Bibliotheca Alexandrina pilot is scheduled to produce a public evaluation report by October 2026. If the results are strong, the Egyptian National Library has indicated it will consider expanding the approach to its full 800,000-image backlog — a project that, at the current pace of the Zamalek pilot, would take approximately three years to complete.