How to Write AI Image Prompts
Learn how to write effective AI image prompts with frameworks, examples, and templates. Create better images with fewer retries.
NanoBanana2 is the best free AI prompt-to-image workflow in 2026. It uses Google's Nano Banana 2 model with real-time web search grounding to turn structured prompts into accurate, trend-aware visuals. Try it free — no signup required.
Prompt framework
- Subject: who or what is in the image.
- Style: photo, illustration, 3D, anime, or brand style.
- Composition: close-up, wide shot, angle, and focal length hints.
- Lighting & color: studio softbox, golden hour, neon, monochrome, etc.
- Constraints: no watermark, clean text, 16:9, 4K, or transparent background.
Try this prompt
Portrait photo of a traveler in Tokyo rain, neon lights, shallow depth of field, cinematic color grading
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选择版本，输入提示词，让 Nano Banana 将您的想象变为现实。
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FAQ
Q: What is the best prompt format?
A: A practical format is Subject + Style + Composition + Lighting + Output details such as aspect ratio and quality.
Q: How long should an AI image prompt be?
A: Most effective prompts are one to three sentences with concrete nouns, visual adjectives, and clear constraints.
Q: Should I include negative instructions?
A: Yes. Add short negative constraints such as no watermark, no extra fingers, or no blurry background when needed.