ABSTRACT Synchronous (In)significance argues for the recognition of a mode of heritage conservation within war-torn Ukraine that is already underway. The paper examines the digital initiative Polycam: Backup Ukraine which allows for everyday users to record, upload and share three-dimensional scans of places, sites and objects that they deem significant within their immediate environment. This evolving contemporary archive is positioned by its founders as a tool for citizen empowerment through the shared availability of the technology and storage of items for heritage capture. The resulting collection provides an unconventional account of the sites, spaces and objects at risk in Ukraine, creating a constellation of high, local, formal and idiosyncratic personal entries. Through this portal, a broad and unsanctioned account of Ukrainian heritage is revealed. This paper draws on the work of Tracy Ireland, Steve Brown and John Schofield which examines the dichotomous relationship of significance and insignificance in the practice of value creation and negotiation of heritage identity. Through this lens it examines how notions of sharing; shared technology, shared ownership and shared access might allow for the creation of a contemporary heritage archive, that interacts with memory, place and things, but does so in ways that “are often not possible in the context of official heritage regimes because of rigid aesthetic paradigms, urban or class conflict, identity politics, or dominant national narratives.” 1 The archive, which draws together digital records of well-regarded heritage sites with unexpected spaces and objects of the personal and the everyday, becomes a means of assessing notions of significance and (in)significance in real-time. This in turn, provides a mechanism for re-evaluating what aspects of the war-torn country are considered worthy of recording and sharing.