Navigate to an individual post and tap the in the top right. Select "Adjust Preview" .
Choose to restore the square view or "Fill" to match the new vertical layout. Recommended Design Specifications (2026) Grids for Instagram 6.1.6
Because of the shift to portrait-style thumbnails, older square content may appear cropped or with "black bars." You can fix this through the following steps: Navigate to an individual post and tap the in the top right