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FLUX 3 Image
Tell FLUX 3 Image where everything belongs: set the canvas ratio, draw a box around each object, and bind the whole scene with a single line of text.
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FLUX 3 Image: Place Every Element with Precision
Shape the frame your way — define a canvas ratio, mark each object with its own box, and let one scene line hold the composition together.
- Draw-to-Place BoxesSketch a rectangle around anything that matters, then tell the tool what should appear inside that region.
- Any Ratio, Consistent CoordinatesSwitch canvas shapes freely — height and width always scale to the same 0 to 1000 ruler, so your coordinates stay valid.
- A Single Line Unifies the SceneOne short sentence stitches the separate regions into a coherent picture, exactly how the Le Festival du Soleil sample came together.
Building a FLUX 3 Image in Three Steps
From a blank canvas to a fully arranged picture in three quick moves.
FLUX 3 Image — Common Questions
Straight answers about composing a FLUX 3 Image from bounding boxes and a scene line.
How does a bounding box control placement?
Each rectangle you draw becomes the territory for one described object, so that element lands inside the region you marked instead of somewhere random.
What is the 0–1000 grid actually for?
However wide or tall the frame happens to be, both sides are read on a 0 to 1000 scale, which keeps every coordinate comparable across projects.
Should I pick the ratio before drawing boxes?
Yes — settle on a ratio first. Since the canvas is always measured 0 to 1000 on both axes, the same numbers stay meaningful even if you change shape later.
What role does the scene prompt play?
It is the one sentence that pulls individually described regions into a single coherent image — the Le Festival du Soleil example was built exactly that way.
Can I describe every box on its own?
Absolutely — once a rectangle is drawn you attach its own content description, so each area carries a distinct instruction for what it should contain.
Is a subscription or seat licence required?
Not at all. Billing is pay as you go with no recurring plans and no per-seat charges, and open-weight tiers let you run the models on your own hardware.
Start Composing Your FLUX 3 Image
Mark each object, write one scene line, then render. You only pay for what you create.