São Paulo officials demand fixes for thousands of corrupted digital archive images.

São Paulo's government databases are cluttered with tens of thousands of duplicate images, redundant photographs, corrupted scans, and repeated document files piling up across municipal systems, and the people responsible for managing the city's digital infrastructure say the problem has reached a breaking point. The issue, long dismissed as routine housekeeping, is now forcing a reckoning inside the Prefeitura de São Paulo and among the tech community that clusters around Avenida Faria Lima and the innovation hubs of Vila Olímpia.

The pressure is real. Brazil's Lei Geral de Proteção de Dados, the LGPD, which has been in force since 2020, requires public bodies to maintain accurate, non-redundant personal data. Duplicate image files, particularly those tied to citizen identification records, property cadastres, and social program databases, put the city in potential legal exposure. Municipal IT administrators say the volume of flagged files has grown sharply as São Paulo expanded its digital services during and after the pandemic years, when demand for remote document processing surged across all 96 subprefeituras.

What Officials and Experts Are Saying

The Secretaria Municipal de Inovação e Tecnologia, based near the Centro Histórico on Rua Líbero Badaró, has acknowledged the scale of the problem in internal working documents circulated to city council members earlier this year. Without attributing specific statements to named officials, the documents, reviewed by this reporter, describe a backlog of image deduplication work stretching across at least four major municipal platforms, including the Nota Fiscal Paulistana system and the housing registry operated under the Secretaria Municipal de Habitação. No official financial cost estimate has been made public.

Independent specialists in the São Paulo tech ecosystem are less guarded. Researchers affiliated with the Instituto de Pesquisas Tecnológicas, the IPT, located in the Cidade Universitária campus in Butantã, have been studying automated image-deduplication tools as part of a broader smart-city research agenda. Their position, laid out in a working paper published in May 2026, is that machine-learning-based deduplication can reduce redundant storage loads in large municipal systems by between 30 and 60 percent, depending on how consistently data was originally ingested. The IPT paper does not name the Prefeitura directly but uses São Paulo as its primary case study.

Open-data advocates at Transparência Brasil, which operates from offices in Pinheiros, argue the issue is partly a governance failure and not just a technical one. Their concern, expressed in public forum submissions to the Câmara Municipal de São Paulo in June 2026, is that without a clear data stewardship policy, image duplication will keep recurring regardless of how many cleanup cycles the city runs. They are pushing for a formal municipal data quality standard, something other major cities, including Buenos Aires and Bogotá, have begun codifying at the administrative level.

The Stakes for Residents and Services

For ordinary paulistanos, the most visible consequence shows up in digital service queues. The SP156 platform, the city's central complaints and services portal, has at times shown residents duplicate image attachments on their own submissions, a glitch that has generated complaints logged inside the system itself. Residents in Sapopemba and Campo Limpo, two districts with high volumes of housing regularization requests, have reported delays linked to corrupted or repeated file submissions, according to community association reports filed with the city ombudsman's office.

The Nunes administration has so far not announced a dedicated deduplication program with a specific budget line or timeline. What exists is a broader digital transformation initiative launched in 2024 under the Programa São Paulo Inteligente, which allocated R$180 million over three years to modernize city systems, but image data quality was not listed as a named priority in the original program framework.

Experts say the next step is not simply running a deduplication script. The IPT working paper recommends a phased audit beginning with the highest-volume databases, housing, tax, and health records, before any automated replacement tool is deployed. Transparência Brasil is expected to present a formal data quality proposal to the city council's technology committee before the August recess. Whether that proposal finds traction will depend in large part on how the Secretaria de Inovação chooses to respond when council members begin asking for specifics.