How Bluesky Hides Its Logo in Screenshots
The clever technique behind Bluesky's disappearing logo feature
1Bluesky's Hidden Logo Technique
The Bluesky app shows its logo in the corner when users take screenshots, but hides it during normal use. Developers achieved this by leveraging iOS security features. When users notice this difference, they become curious about how it works. Technical details are available in the app's open-source code, making it possible to understand the mechanism.
2Technical Background
Added in January 2026 by developer mozzius, the GrowthHack.tsx file manages this feature. The system works using the expo-privacy-sensitive package. This package utilizes the UITextField's isSecureTextEntry property. Normally used to hide password fields, this property serves a different purpose here, demonstrating creative use of platform capabilities.
3How It Works
The app places a UITextField where the Follow button normally appears, marked as secure text entry. When a screenshot is taken, iOS automatically blanks this field, revealing the Bluesky logo underneath. This technique is also used by apps like Telegram and Signal for their secret chats, showing its effectiveness across different use cases.
4App Switching Challenge
Users noticed the feature doesn't work during app switching. This occurs because iOS takes its own screenshot during transition animations when the UITextField isn't active. This behavior provides important clues about how the technical implementation works and its limitations under different usage scenarios.
5Open Source Advantage
Bluesky being open source allows easy inspection of such technical details. Developers use clearly named files like GrowthHack.tsx to document these features. This transparency creates valuable resources for those curious about how the app works, fostering understanding and trust within the developer community.
6Competitor Implementations
Apps like Telegram and Signal use similar techniques, especially for their secret chats. These implementations demonstrate how platform features can be repurposed creatively. The widespread use of such methods reduces the likelihood of Apple restricting them, as they've become accepted practices in app development.
7User Reactions
This feature sparked discussions in the Bluesky community. Some users viewed it as API misuse, while others appreciated the creative solution. Developers had to lock the thread, indicating how heated the debate became. This controversy highlights the ongoing tension between innovative features and ethical considerations in app design.
8Creativity in Marketing and UX
Bluesky's approach demonstrates the importance of creative techniques in app marketing. Subtle yet noticeable details like this enhance brand awareness without disrupting user experience. The delicate balance between UI design and user interaction plays a critical role in the success of modern applications.