Image generation prompts for websites
Image generation prompts for websites should define the asset role, composition, aspect ratio, brand mood, subject, lighting, background, usage context and negative constraints. Website images need to support hierarchy and trust, not merely look impressive in isolation.
Asset role
Start by defining whether the image is a hero asset, product mockup, lifestyle image, icon set, background texture or social card.
The same image prompt should not be used for every slot. Hero assets need safe space. Product mockups need clarity. Social cards need legibility.
Prompt constraints
Specify composition, crop, aspect ratio, colour, lighting, object placement, brand rules and what must not appear.
Avoid asking the model to render important text inside an image. Use HTML or vector text for titles, labels and UI where possible.
QA checks
Check for distorted text, fake logos, extra objects, unnatural hands, irrelevant backgrounds and mismatch with the website actual palette.
Also inspect the asset inside the page. A good standalone image can still fail if it fights the content hierarchy.
Prompt example
Generate a website hero image for [product].
Asset role: wide hero background with safe space for HTML text.
Subject: [specific product/user/context].
Composition: 16:9, subject on right, clean negative space left.
Mood: [brand mood].
Palette: [site palette].
Constraints: no logos, no text, no watermarks, no stock-photo look.
QA: must work at desktop crop and mobile crop without hiding key detail.Common mistakes
- Prompting an image without an intended page slot.
- Letting generated text become part of the UI.
- Using third-party logos or recognisable protected marks.
- Not checking mobile crop.
- Choosing an impressive image that weakens the page hierarchy.
Workflow
- Define the image slot and crop.
- Write the prompt with brand and layout constraints.
- Generate several candidates.
- Reject anything with text, logos or artefacts.
- Place the asset in the page and verify screenshots.
FAQ
How do I prompt AI images for websites?
Specify asset purpose, composition, style, aspect ratio, brand mood, colour, lighting and negative constraints.
Should website hero images include text?
Usually avoid generated text inside images because models can distort lettering. Use real HTML text where possible.
What makes a good product mockup prompt?
Clear product description, background, lighting, angle, realism level, brand constraints and no third-party logos.
Should image prompts mention aspect ratio?
Yes. Aspect ratio and crop safety are critical when assets need to fit responsive website layouts.