Sketch to CAD-Style Line Art Conversion Prompt

A two-part prompt sequence for Nano Banana Pro (using its 'Thinking Mode') to convert a rough sketch into precise, CAD-like line art. The first prompt instructs the model to finalize the rough sketch, referencing blue text annotations, removing ambiguity, and applying line weight variation. The second prompt is a follow-up instruction to apply the same style to subsequent rough sketches.

Example Images

Example image 1 for Sketch to CAD-Style Line Art Conversion Prompt

Example image 2 for Sketch to CAD-Style Line Art Conversion Prompt

Example image 3 for Sketch to CAD-Style Line Art Conversion Prompt

Edit Your Prompt

Replace placeholders like {{YOUR_NAME}} or {{SUBJECT}} with your own values

Add Reference Images (Optional, up to 5)

Click to upload, or press ⌘V / Ctrl+V to paste from clipboard

Add reference images to guide the AI generation

Aspect Ratio

Select AI Model

Nano Banana

2 coins🔥

Fast and affordable standard quality AI images.

Nano Banana PRO+

6 coins