How AI Inpainting Works — And Why It's Better Than Manual Cloning
Inpainting lets you paint over any part of an image and have AI fill it in seamlessly. Here's how Gemini makes it work with photorealistic results every time.
What Is Inpainting?
Inpainting is the process of reconstructing a selected region of an image using context from the surrounding pixels. Traditional tools required you to manually clone nearby textures — a slow, skill-intensive process. AI inpainting does it in one step: you mark the area, describe what should be there, and the model fills it in.
How Gemini Handles Inpainting
Reloadium Image Editor uses Google Gemini 2.5 Flash for inpainting tasks. When you paint a mask over a region and submit a prompt, the model receives both the full image and the mask boundary. It analyzes the surrounding scene — lighting direction, texture patterns, color gradients, depth cues — and generates a fill that matches the context.
The result is stitched back into the original image with blend operations handled by the HTML5 Canvas API. You rarely see a hard edge because the model generates content that naturally continues from the unmasked area.
Use Cases
Object removal — Paint over a person, watermark, or unwanted element. The AI reconstructs the background as if the object was never there. No cloning stamp, no patch tool.
Object replacement — Paint over an object and describe what should appear instead. Swap a plain bag for a designer one, replace a white wall with a window, or change a street sign.
Style localization — Apply a style change to a specific region without affecting the rest of the image.
Defect repair — Cover scratches, stains, lens flares, or compression artifacts on old or damaged photos.
Inpainting vs. Magic Eraser
The Magic Eraser in Reloadium Image Editor is a specialized inpainting mode where the fill instruction is always to reconstruct the background — no need to type a prompt. General inpainting, on the other hand, accepts any description for the fill region, giving you full creative control.
Getting the Best Results
Mask generously around the edge of the object you want to affect — tight masks cut off context the model needs to generate a believable blend. For object replacements, include the shadow and ground contact area in the mask. Shorter, concrete prompts tend to outperform long descriptive ones for inpainting.
Try it at reloadium.com/image-editor.