Delhi's Digital Archivists: Inside the Effort to Preserve the City's Image Heritage

Nestled in a converted heritage building off Kasturba Nagar, a nonprofit called Heritage Index has spent the last eighteen months scanning, cross-referencing, and digitally restoring photographs of Delhi from the 1950s through the 1980s. The task sounds straightforward until you understand the scope: volunteers and paid staff members are working through an estimated 40,000 images, many of them duplicates in varying states of decay, stored haphazardly across private collections, government archives, and NGO vaults across the city.

The project emerged from frustration. When Swapna Banerjee, a documentary photographer, began researching Delhi's urban transformation in 2024, she discovered that institutional memory of the city existed in fragments. Municipal records at Town Hall in New Delhi held some photographs. The Delhi State Archives maintained another collection. Private families kept boxes of prints. But no single searchable database existed—and duplicates created confusion about which images were originals, which were prints, and which were degraded copies that had been recopied so many times that their detail had vanished.

"We started with a simple question," Banerjee explained during an interview in the Heritage Index office. "If a photograph of Chandni Chowk from 1967 exists in five different archives in five different conditions, how do researchers and students know which one to use? More importantly, how do we preserve the best version before all of them disappear?"

Building a Database From Chaos

The work involves technical skill and historical judgment in equal measure. Volunteers at the Kasturba Nagar office use Canon flatbed scanners to digitize images at 300 dots per inch—a standard that preserves fine detail without creating files so large they become unmanageable. They then upload the digital images to a secure server and cross-reference them against an internal catalogue that tracks provenance, condition, date, and location information.

The challenge of duplicates is not merely archival pedantry. According to a preliminary audit Heritage Index completed in early 2026, approximately 35 percent of photographs in the collections they examined were duplicates or near-duplicates. Some were prints made from the same negative at different times; others were copies made because the original had deteriorated. Identifying these relationships requires staff members to study images for subtle differences—a crack in the print, a slight color shift, variation in border width—that might indicate generation and condition.

Rajesh Kumar, a volunteer at the project since March 2026, spends most afternoons examining prints with a magnifying glass and making notes in a leather journal. He estimated that cataloguing and comparing just the Chandni Chowk collection—roughly 200 prints—took his team six weeks. "You cannot rush this," Kumar said. "One wrong entry, and someone building a historical argument based on that image has bad information."

The project has also partnered with the Delhi Urban Heritage Foundation and the Indian Institute of Technology Delhi's Department of Architecture to develop metadata standards. IIT Delhi students have written Python scripts to help organize the images by decade and geographic location within the city, reducing the time required to track relationships between photographs.

A Race Against Time

The urgency is real. Several private collections that Heritage Index had hoped to acquire were discarded when property owners cleared family homes. A batch of photographs documenting Old Delhi's commercial areas in the 1970s disappeared from a private residence in Ballimaran last year when the owner's family moved and did not recognize their historical value.

Heritage Index operates on an annual budget of roughly 18 lakh rupees, funded through grants, donations, and limited government support. That sum covers three full-time staff members, rent on the Kasturba Nagar space, scanner maintenance, and server costs. Volunteers contribute an estimated 500 hours per month without compensation.

The team expects to complete initial scanning and cataloguing of all 40,000 images by early 2027. After that, the work of restoration begins—using digital tools to repair tears, correct color loss, and enhance visibility in faded prints. Only then will they begin making the database available to researchers and students, initially through the Delhi State Archives website and later through open-access platforms.

For anyone with family photographs or historical images of Delhi, Heritage Index accepts donations and loans at their office. They have already begun preliminary conversations with several families in Defence Colony and Lodhi Colony about collections that have been stored in trunks for decades. The race to save these images is just beginning.