Answer : Yes, Home Design 3d is offline. Home Design 3D does not require an internet connection to operate the app on your browser. The only exception of this rule is when you are using features that require more memory or computation power - for example, rendering a home design with textures and shadows settings. But in spite of these more demanding parts of the app, you can always continue working on your project offline without losing data saved locally for any feature you are working on at the moment. Once your computer's internet connection returns online - all work will be uploaded to our server automatically while background tasks will still run while connecting to Home Design 3D!