This article introduces the concept of appearance to explain how family photographs become visible and relationally meaningful within platformised digital environments. While existing research on family photography has largely focused on representation, memory, and domestic identity, less attention has been paid to the communicative processes through which images gain public presence. Here, visibility is understood not as a passive result of uploading but as an emergent sequence involving visual staging, posting, audience interaction, and algorithmic circulation. Drawing on qualitative analysis of family-related posts from WeChat Moments and Douyin, the study shows how ordinary domestic images accumulate affective and relational significance through feedback, recognition, and infrastructural selection. Photographs therefore “appear” not simply as visual artefacts but as socio-technical events whose meanings are co-produced across users, interfaces, and visibility systems. By integrating visual rhetoric with platform studies, the article offers a conceptual vocabulary for understanding how intimacy becomes publicly articulated under platform conditions. Appearance thus provides a framework for theorising visibility as communicative action and for explaining how everyday family imagery acquires cultural significance in contemporary digital communication.