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Write a structured prompt covering subject, setting, style, lighting, composition, and aspect ratio, then generate with a model like Flux, Gemini, or Ideogram. Always specify dimensions explicitly and add style direction such as photorealistic or flat illustration.

Ideogram 3.0 renders text most accurately, making it the best choice for headlines and branded graphics. Gemini and GPT Image handle short text decently, but for anything beyond brief headlines, add text as an overlay in post-processing instead.

No, AI models hallucinate interface elements and should not be used for product UI. Capture real screenshots at 2x resolution with browser DevTools or tools like CleanShot X, then frame them in device mockups and annotate with code overlays.

OG images should be 1200x630, which also works for blog heroes. Platform sizes vary: Instagram feed is 1080x1080, Stories are 1080x1920, LinkedIn feed is 1200x627, and X cards are 1200x675.

Serve WebP with JPEG fallback, resize images to their display dimensions, compress photos to 75-85% quality, lazy load below-the-fold images, and set explicit width and height attributes. Use cwebp or ImageMagick for batch conversion.

Use design tools when exact brand guidelines must be followed, when you need many size variants of one design, or for recurring templates. Use AI generation for unique hero images, abstract visuals, and one-off creative concepts.