Use annotations to show what you want changed
Mark the exact area so Oona understands what to change and what to leave alone.
Updated 2026-05-073 min read
Use this guide when you want to point at a specific part of an image instead of describing it in text, or when text descriptions have not been precise enough.
What annotations are for
- Mark a small area that is hard to describe.
- Disambiguate between similar objects in one photo.
- Protect an object by marking it clearly as “keep”.
- Combine a mark with a short instruction (“change this to warmer wood”).
How to use annotations
Open the annotation mode for the image, mark the area, then send a short message describing what you want done with the marked region.
- “Change this area to a warmer tone.”
- “Replace the highlighted piece with something lighter.”
- “Keep this corner exactly as it is.”
If you do not have the tool
Describe location using relative position (“bottom-left corner”), nearby objects, and one unique detail. If needed, upload a screenshot with a rough highlight drawn in another app.
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