Photograph a rough pencil or marker sketch and describe how it should look when finished. Sketch to image AI follows your lines and proportions, then adds the materials, color and light.
Best for text in images: posters, signs and labels.
Before
AfterEach result started as a quick sketch on paper, photographed with a phone. Tap “Use this prompt”, add your own sketch and run it.
“Finish this rough knight sketch as full-color fantasy concept art: worn steel plate armor, a dark blue cloak, the sword and shield from the sketch, dramatic side light and a misty castle courtyard behind. Keep the pose and proportions from my sketch.”
“Render this marker sketch as a realistic product photo of the sneaker: white leather upper, gray suede panels, a gum rubber sole and soft studio light on a plain light gray background. Follow the shape and panel lines of the sketch, with no logos.”
“Turn this pencil sketch into a realistic photo of the living room: a linen sofa, an oak coffee table, a tall fiddle-leaf fig by the window, white walls and soft morning light. Keep the layout, the window and the furniture positions from the sketch.”
Your sketch sets the layout, the shapes and the proportions. The prompt sets everything the sketch can’t show: materials, color, light and how real it should look.
Go from sketch to render in one step. Architects, renovators and homeowners turn quick perspectives into realistic visuals to test materials and light before anything is built.
From sketch to concept art: a rough pose or a doodle becomes a finished character for a game, a comic or a tabletop campaign. Your pose and costume ideas stay; the model fills in anatomy and detail.
Take a marker concept from sketch to product shot you can show a client or a maker. Furniture, shoes, packaging and jewelry all work.
Lay the paper flat in daylight and shoot from straight above, or upload a scan or a tablet sketch. Tap the + tile, drag the image in or paste it.
Say what it is and how it should look: materials, colors, light and the finish (realistic photo, illustration or product render).
“Follow my lines exactly” keeps your design; “use the sketch as a loose guide” lets the model fix proportions. GPT Image 2.5 is selected by default and follows these notes well.
Most images are ready within a few minutes (free accounts wait at least 2 minutes on premium models). Compare the result with your sketch and download it at full size with no watermark.
Faint construction lines can be read as real edges. Go over the final outline with a darker pencil or a marker before you take the photo.
A circle could be a window or a clock. Say it in the prompt: “the circle on the left wall is a round mirror”.
Crop the photo to the edges of the paper so the model doesn’t turn your pen, desk or fingers into part of the scene.
Upload a photo of a material or a room you like as a second image, and say which image is the sketch and which is the style. GPT Image 2.5 takes 16 reference images.
A sketch holds the idea: the layout of a room, the outline of a shoe, the pose of a character. What it lacks is color, material and light, and that is the part sketch to image AI adds. The model reads your lines as the structure of the picture and builds on them, so the finished image keeps your design instead of swapping it for a generic one. One prompt takes you from sketch to photo, painting or 3D render.
It works for architects testing a façade, designers showing a client three colorways, writers who want to see their hero, and anyone curious how a doodle would look as a real object. GPT Image 2.5 is the default here because it follows long instructions and keeps lettering on labels and signs readable. Nano Banana 2 and Seedream 5 are good alternatives for rich color.
New accounts get 8 credits, then 4 more each day from the second day. GPT Image 2.5 costs 3 credits at 1K, 4 at 2K and 7 at 4K, and the exact cost shows before you generate.
Your sketches are used only to make your image and stay private in My Images. You may use the results in personal and commercial work.
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