Photoroom's placement guides are designed to help you position your layers centrally or inside the padding boundary. They are on by default, but you can turn them off if you prefer.
Note: This article explains how to turn placement guides on or off on the iOS version of Photoroom. If you're using the Android or Web App version, see:
Turn the placement guides on or off (Android)
Turn the placement guides on or off (iOS)
On iPhone and iPad
To turn the placement guide on or off:
Select Content.
Select Settings.
Scroll down and turn Placement Guide on or off.
Note: The Placement Guide setting applies to your device, across all of your Spaces. Your preference does not affect other users.
Exit the Settings screen.