Capture it flat
Scan the sketch or photograph it straight on in even light, then crop to the drawing.
Black Forest Labs · FLUX 3 Image × Sketch to render
FLUX 3 Image Sketch to Render
Turn hand sketches into photoreal architectural renders with FLUX 3 Image in RenderChat. Upload your hand sketch, describe what you want, and refine the render in chat.
Pro plan1KOne request per render
Illustrative previewHand sketch
Drag to compare the input with an illustrative preview. Model-generated example coming soon. Input is an AI-generated example.
Before you start
Prepare your hand sketch
A sketch carries the idea long before there is a model. Photograph it, tell RenderChat what the lines mean — glass, timber, trees, the time of day — and get a rendered version you can show, discuss and redraw over.
Strengthen faint lines
If the pencil is light, raise the contrast so the important lines read clearly.
Explain the lines
In your brief, say what the ambiguous strokes are: which surfaces are glass, which shapes are trees, where the entrance is.
How it works
Sketch to Render with FLUX 3 Image, step by step
FLUX 3 Image
by Black Forest Labs
- Maker
- Black Forest Labs
- Output
- 1K
- Aspect ratios
- Auto + 10 fixed ratios
- References
- Up to 10 images
- Follow-ups
- Fresh request each time
- Plan
- Pro
Prepare your hand sketch
Capture it flat, strengthen faint lines and explain the lines. The checklist above has the details.
Open RenderChat with FLUX 3 Image
The start button on this page opens a new chat with FLUX 3 Image selected. You can also pick it from the model menu in the composer.
Upload and write the brief
Attach the image and say what must stay, then the materials, light, setting and people. Start from an example brief below.
Refine in chat
Ask for changes in follow-up messages. Each FLUX 3 Image request is sent fresh from your latest image, so repeat the constraints that matter.
Download the render
Download the image at the resolution you chose (1K).
Example briefs
Sketch to render briefs to start from
Copy a brief, paste it into RenderChat with your hand sketch, and change the materials and mood to match your project.
Turn this hand sketch into a photoreal render. Follow the perspective and proportions of the drawing. White brick walls, large timber-framed windows, a pitched zinc roof, a gravel path and wild grasses, soft morning light.
Render this sketch as a soft, painterly architectural visualization. Keep the linework visible, add watercolor washes for materials and sky, warm afternoon light.
FLUX 3 Image in RenderChat
Working with FLUX 3 Image
Create images from a brief or edit your references with Black Forest Labs' FLUX 3 in RenderChat.
- Select the image to edit, then describe what should change and what should stay.
- Attach material and style references alongside the image you want to edit.
Quality check
What to check before you share it
- Lines the AI read differently from your intent — correct them by name in the next message.
- Proportions: loose sketches can stretch or compress in the render.
- Window and door positions on the main facade.
Compare
Other models for Sketch to Render
RenderChat lets you switch models in the same chat. Run your hand sketch through two or three and keep the result that respects your design best.
| Model | Maker | Output | References | Follow-ups | Plan | Guide |
|---|---|---|---|---|---|---|
| GPT Image 2.6 | OpenAI | 1K | Up to 16 images | Fresh request | Free | |
| FLUX 3 ImageThis page | Black Forest Labs | 1K | Up to 10 images | Fresh request | Pro | |
| GPT Image 2.5 | OpenAI | 1K | Supported | Continues the chat | Free | |
| Nano Banana Pro | 1K · 2K · 4K | Up to 14 images | Continues the chat | Pro | ||
| Nano Banana 2.1 | 1K · 2K · 4K | Up to 14 images | Continues the chat | Free | ||
| FLUX.2 Pro | Black Forest Labs | 1K | Up to 9 images | Fresh request | Pro | |
| Seedream 5.0 | ByteDance | 1K · 2K | Up to 10 images | Fresh request | Pro | |
| Kling O3 | Kuaishou | 1K | Up to 10 images | Fresh request | Pro | |
| Reve 2.1 | Reve | 4K | Up to 8 images | Fresh request | Pro | |
| Krea 2 | Krea | 2K | Up to 10 images | Fresh request | Pro | |
| Ideogram 4 | Ideogram | 1K · 2K · 4K | Up to 1 image | Fresh request | Pro | |
| GPT Image 2 | OpenAI | 1K | Supported | Continues the chat | Pro | |
| Nano Banana 2 Lite | 1K | Up to 14 images | Continues the chat | Pro |
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FAQ
FLUX 3 Image Sketch to render questions
Is FLUX 3 Image available on the free plan?
FLUX 3 Image is available on the Pro plan. On the Free plan you can use GPT Image 2.6 and GPT Image 2.5 and Nano Banana 2.1.
What resolution does FLUX 3 Image render at?
FLUX 3 Image renders at 1K in RenderChat, with auto + 10 fixed ratios.
Can I keep refining a FLUX 3 Image result in chat?
Yes. Each follow-up is sent to FLUX 3 Image as a fresh request built from your latest image and instructions, so restate the constraints that matter.
How do I select FLUX 3 Image in RenderChat?
Use the start button on this page — it opens a new chat with FLUX 3 Image selected — or choose it from the model menu in the chat composer.
How rough can the sketch be?
Rough is fine if the perspective is legible. The looser the drawing, the more the AI fills in, so describe materials and key elements in words.
Can I keep the hand-drawn character?
Yes. Ask for a painterly or watercolor rendering that keeps the linework instead of a photoreal image.
Try FLUX 3 Image on your hand sketch.
Open RenderChat with FLUX 3 Image selected, upload your hand sketch and start from one of the briefs above.