Turn a written brief into an image, or upload photos and describe what to change with FLUX.3 Klein. Choose the composition, output size and format in one workspace; sign in and check the displayed credit cost before creating.
Describe the main subject, setting, light and framing before adding style details. For a product concept, specify its material and the space around it. Start with one clear composition rather than several conflicting scenes; you can refine the next attempt after reviewing the first image.
Upload a sharp photo and name both the change and what should stay: for example, replace the background while keeping the product shape and viewpoint. The model can also change unintended details, so compare faces, labels, edges and proportions with the original before using the edit.
Use JPG, PNG or WEBP references of up to 10 MB each. Explain each image's role, such as the subject, setting or colour direction, and avoid contradictory views. Ten is the upload limit, not a guarantee that every identity or detail will be preserved; fewer well-chosen images may make your request clearer.
Use 1:1 for square placements, 4:3 or 3:2 for landscape layouts, 3:4 or 2:3 for portraits, and 16:9 or 9:16 for wide or vertical compositions. Auto uses a square for text-only generation and lets an image edit follow its references. Describe where the subject should sit if you need room for later typography.
Choose the output resolution before generating and select PNG or JPEG. One request returns one image. Higher resolution can help with larger placements but does not repair incorrect text, anatomy or product detail; verify the result at full size. The actual pixel dimensions depend on the selected resolution and aspect ratio.
Keep any requested wording short and clearly separated from the rest of the description. After generation, read every label and check hands, reflections, repeated objects and small patterns. For a finished poster or product label, add precise typography in your design editor rather than assuming generated text is error-free.
Try a tabletop product scene, a seasonal background or a consistent colour direction for a campaign concept. Keep the reference product visible and change one major element at a time. Compare the generated silhouette, packaging and logos with your source; a visually appealing concept is not proof of an exact catalogue match or permission to use a brand.
Sign in, confirm your balance and the credit estimate, then submit your request. Once the image is ready, inspect it and use the result's download control. Open the saved file before handing it off for a website, presentation or further editing. Check rights to your inputs and applicable service and model terms before publishing.
Place a ceramic bottle on a light stone surface with soft side lighting and space for a heading. Compare the product outline and label with your reference before using the result.
Try a new background for an existing portrait while describing the features and viewpoint to retain. Review the face, hair and edges against the original.
Explore a vertical composition using a reference colour palette. Leave room for a headline, then add the final lettering and layout in your design editor.
FLUX.3 Klein Image Generator FAQ
Looking for the previous image model? Explore FLUX.2, or compare another workflow with Nano Banana 2.1.
