FLUX.1 Fill Pro

Professional inpainting and outpainting. Requires an image; optional mask and outpaint presets.

What it is good for

Professional inpainting with FLUX.1 Fill Pro

Pro-tier inpainting and outpainting with mask support — seamlessly extend scenes or replace masked regions with prompt-guided generation.

Remove distractions and generate context-aware replacements.

Outpaint backgrounds for new aspect ratios or banner crops.

Fix small regions in product or portrait images without full regenerations.

Key capabilities

Paint what should change; Fill regenerates masked areas to match the scene.

Extend canvases beyond the original borders with coherent context.

Edges and lighting blend more convincingly for delivery work.

Describe what belongs inside the mask instead of cloning nearby pixels.

Adjust inference when fills need tighter adherence or smoother blends.

How to get a strong result

Start with the subject, then add lighting, style, and anything that must stay the same. Upload a reference whenever you want a more controlled edit.

1
Feather masks slightly
Soft mask edges help Fill blend into surrounding pixels.
2
Describe context in the prompt
Mention lighting, material, and perspective for masked regions.
3
Try Dev for mask tests
Validate mask shapes on Fill Dev before Pro delivery.
4
Outpaint in stages
Large extensions work better as several smaller outpaint passes.