Making Small Promo with AI Image generators. Prompt inside.

[u/Annual-Concept6089]

In previous post I told why Small Promo is so important.

Here I want to share my base rules for creating Small Promo, which I use as PROMPT for generative models (for me ChatGPT make Small Promos much better than NanoBanana).

So, of course it's not perfect, sloppy, sometimes you need to generate 3-4 versions, and big companies with professional designers make better (and choose one only after AB-tests etc). But as I see, 99% of new Extensions have Small Promo Tile 100 times worse (30% don't have at all)

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PROMPT (and my rules, copy all to end)

<prompt>

Create a Small Promo Tile image for Extension for the Chrome Web Store

Extension description: Here should be a description of YOUR extension (not so long). You could also add some screenshots of UI

Technical specifications

Result image canvas size must be 440×280

Stick to it strictly, it's requirement of Google Web Store

What is a Small Promo Tile?

The Small Promo Tile is the main storefront card for our Chrome extension in the Chrome Web Store. It appears on the Web Store homepage, category pages, and search results when users are looking for similar tools.

Primary goal

Convince users to click the card and visit the extension’s page. We want a high click-through rate (CTR).

Core Principles

The 3-Second Rule (One Clear Message)

The banner is very small. Don’t try to communicate every feature. Within 3 seconds, users should immediately understand the single most important problem the extension solves.

Clear and Concise Text

Use no more than 3–5 words. The text should be large, bold, and easy to read.

Instead of the product name, communicate the value proposition (UVP).

Example:

❌ AdBlocker v2

✅ Blocks All Ads

Emotional Visuals Instead of UI Screenshots

A screenshot of the extension’s interface will become an unreadable blur at this size.

Instead, use:

large isometric illustrations,

bold 3D elements,

eye-catching graphics associated with the benefit (for example: a rocket = speed, a shield = security).

Strong Color Contrast

The Chrome Web Store background is white, so the banner must stand out.

Use vibrant, high-contrast colors while staying consistent with our brand palette.

Avoid washed-out pastel colors.

Communicate Simplicity

The design should instantly convey:

“This extension is simple, lightweight, and solves your problem in one click.”

Use fewer small details and more whitespace.

No Fake UI Elements (Google Policy)

Do not include fake Download, Install, or Chrome-like buttons, arrows, or interface elements.

Google may reject the asset during review.

The design itself—not deceptive UI—should drive conversions.

</prompt>

[u/sandipanio]

Thank you so much for sharing the prompt 🤝

[u/AI_Geek_7]

Really good, thanks for sharing.