Background Replacement
Swap the background behind a subject and get edges that hold up — hair, glasses, and shadows included — instead of the usual cut-out halo.
The prompt
Replace the background of the attached photo with {{new_background}}. Keep the subject exactly as-is and cut them out cleanly, including hair strands, glasses, and semi-transparent edges. Match the new background's light direction, colour temperature, and depth of field to the subject, and add a realistic contact shadow so they don't look pasted in: {{photo_notes}}
Works in ChatGPT, Claude, Gemini and other assistants. Replace the highlighted placeholders with your own content.
How to use it
Attach the photo, describe the new scene at {{new_background}} and add notes at {{photo_notes}}. The prompt asks for clean edges around hair and glasses, matched light and a contact shadow.
Tips for better results
- Pick a background whose light direction fits the subject.
- Zoom in on hair and edges to check the cutout.
- Ask for a shadow if the subject looks pasted in.
Save this prompt in Promta
Keep it in your library and paste it from the menu bar, a hotkey or your iPhone keyboard, without leaving the app you're in.
Download Free on App Store
Free to start · iPhone & Mac