Mask Edit Flow
Edit exactly what you paint.
A minimal Apple-like flow: upload one photo, paint the mask, describe the edit, then compare and download the final result.
1
UploadAdd your photo
2
MaskPaint exact area
3
PromptDescribe the edit
4
ResultCompare and download
Step 1 · Upload photo
Pick one image to edit. You’ll paint the exact editable area in the next step.
What happens next
1 photo
1 mask
1 prompt
The app will send the original image, your mask image, and a hidden safety prompt plus your own instruction to Gemini.
Step 3 · Describe the edit
The hidden precision prompt below will always be added first. The user only writes what should change.
Hidden default prompt
How it gets sent
The app sends your image and mask to Gemini, then re-applies the original photo everywhere you did not paint, so changes stay inside the mask even if the model over-edits.
Creating your edit…
Sending image, mask, and prompt to Gemini.
0.0s
Step 4 · Compare and download
Same frame for both images — drag the line or use the slider. Original below the line, edited above.