What was the caption of the first Instagram post?

The caption of the first Instagram post, made by co-founder Kevin Systrom on July 16, 2010, was "Test". This simple caption reflected the fact that the post was intended as a test of the app's functionality, rather than as a significant or meaningful statement.

Despite its simplicity, the caption of the first Instagram post helped to establish the platform's informal and conversational tone. It helped to position Instagram as a place where people could share everyday moments and experiences, rather than just polished and curated content.

Over time, the captions on Instagram have become more important as a way for users to express themselves and engage with their followers. However, the simple and straightforward caption of the first Instagram post remains an important part of the platform's history and helps to illustrate its early branding and positioning.