replaced picture is smaller when published

This can happen for a few different reasons in Storyline, especially when images have been replaced rather than inserted fresh.

A few things to check:

• Picture cropping: The image may look correct in Storyline because of the crop settings, but publish differently. Try removing the image completely and inserting it again rather than using "Replace Picture."
• Image dimensions: Ensure the replacement image has the same aspect ratio and resolution as the original.
• States: Check whether the object has multiple states (Normal, Hover, Selected, etc.) and verify the image was replaced in all relevant states.
• Scaling settings: Look at the Size and Position settings to make sure the image is set to 100% scale and hasn't inherited unexpected scaling.
• Slide Zoom or Player scaling: Test the published output locally and compare it with Review 360. Sometimes browser zoom or responsive scaling can make images appear smaller.
• Corrupted object: If the issue occurs only with certain images, create a new picture object and insert the image from scratch. Several users have reported that this resolves odd sizing issues that persist after using Replace Picture.

If you're seeing this across multiple files, it may also be worth checking whether a recent Storyline update introduced the behavior. Sharing your Storyline version and a screenshot of the image properties would help narrow it down.