A good Nano Banana logo prompt names the symbol, the style, two or three colours and the layout, and it keeps any lettering separate or very short. Nano Banana can sketch logo ideas fast, but it isn’t a brand designer, and it has clear weak spots: spelling, tiny details and clean vector files. This guide gives you 15 copy-paste prompts, a method for getting usable results, and the legal and technical checks to run before a logo goes on a shopfront or website.
Nano Banana logo prompt: how it works
Treat the model as a fast concept sketcher. You describe a brand, it returns a picture, and you refine with short follow-up messages. Google’s own prompting advice suggests writing a scene with a subject, an action, a setting, a composition and a style. For logos, swap those for symbol, personality, colours, layout and limits. Then check the result at small sizes before you fall in love with it.
Key takeaways
- Name one clear main symbol, not five ideas at once.
- Limit colours to two or three, and say “flat” if you want no gradients.
- Put any wording in quotation marks and keep it short, or leave text out and add it later in a design tool.
- Expect to generate many options. A few in every ten are worth refining.
- Outputs are normal image files, not true vector files, so a designer or a trace tool is needed for clean scalable artwork.
- Check trademarks and copyright before you use anything commercially.
A formula that works
| Part | What to write | Example |
|---|---|---|
| Type | Icon, wordmark, monogram, badge or mascot | A simple icon logo |
| Brand and personality | Business and feeling | for a calm yoga studio, warm and friendly |
| Main symbol | One specific object | a lotus flower made from three curved lines |
| Style | Flat, line art, geometric, hand-drawn | flat vector style, thick even outlines |
| Colours | Two or three named colours | deep teal and soft sand |
| Layout | Where things sit | centred on a plain white background, lots of space |
| Limits | What to avoid | no gradients, no shadows, no tiny details |
One small tip from Google’s guidance applies here: describe what you want rather than what you don’t. “Plain white background” works better than “no busy background”. The exception is a short limits line like “flat colours only”, which helps keep the design simple. For a deeper look at prompt writing, read our Nano Banana prompt guide.
15 Nano Banana logo prompts to copy
Swap the details in each prompt for your own brand. Each one asks for the symbol only, so you avoid spelling errors, and the later section shows how to add text.
Icon logos
- Coffee shop. “A simple icon logo for a neighbourhood coffee shop: a steaming cup whose steam forms a small leaf. Flat style, thick even outlines, dark brown and cream, centred on a plain white background. Symbol only, no text.”
- Fitness studio. “A bold geometric icon logo for a strength gym: a kettlebell built from two overlapping triangles. Flat style, charcoal and bright orange, plain white background. Symbol only.”
- Tech start-up. “A modern icon logo for a data analytics start-up: three rising bars joined by a thin line that ends in a dot. Flat design, electric blue and white, generous spacing, plain background. No text.”
- Bakery. “A friendly icon logo for a small bakery: a wheat ear curving into the shape of a croissant. Hand-drawn feel, warm gold and soft brown, on cream paper. Symbol only.”
Monogram and badge logos
- Law firm monogram. “A classic monogram logo using the letters ‘MR’ joined in a serif style inside a thin circle. Navy and gold, flat, plain white background. Only these two letters.”
- Craft brewery badge. “A round badge logo for a craft brewery with a hop cone in the centre and a simple border ring. Vintage print style, dark green and cream, flat colours, no small details.”
- Outdoor club emblem. “A shield emblem for a hiking club showing a mountain peak and a pine tree in simple shapes. Two colours, forest green and off-white, bold lines, easy to read at small sizes.”
- School crest. “A modern crest for a coding school: an open book topped by a small star. Flat, deep purple and yellow, symmetrical layout.”
Wordmarks and lettering
- Short wordmark. “A wordmark logo that reads ‘Fern’ in a rounded, friendly sans-serif font, lowercase, dark green on a plain white background. Only that one word.”
- Script wordmark. “The word ‘Marlow’ in an elegant hand-written script, deep burgundy, one continuous flowing line, plain cream background.”
- Stacked text logo. “A logo with the words ‘Blue’ on the first line and ‘Harbor’ on the second, bold condensed sans-serif, navy blue, left aligned. Plain white background.”
Per Google’s guidance, give the exact words in quotes and describe the font style, such as “bold, white, sans-serif”. Text is still the weakest part, so read every letter carefully.
Mascot and playful logos
- Pet shop mascot. “A cute fox mascot head logo for a pet supply shop. Simple rounded shapes, orange and cream, thick outline, friendly smile, plain white background. Original character, no text.”
- Kids’ tutoring. “A cheerful owl logo wearing a small graduation cap, built from circles and soft curves. Bright teal and sunny yellow, flat colours, plain background.”
Prompts for testing and mock-ups
- Dark background version. “Take this logo and place it on a dark charcoal background, switching the dark parts of the logo to white. Do not change the symbol shape.”
- Mock-up. “Show this exact uploaded logo printed on a plain white tote bag hanging on a wooden hook, soft daylight. Use the uploaded logo as it is.”
The workflow that saves time
- Generate a batch. Run six to ten prompts with different symbols, one at a time. Expect most to be mediocre. That’s normal.
- Pick a favourite. Choose the clearest shape, not the most detailed picture.
- Refine in small steps. Ask for one change per message, such as “make the lines thicker” or “reduce the leaf to two shapes”. Add “do not change the symbol shape” when you only want spacing changes.
- Test it small. Shrink it to about 16 pixels (a browser tab icon), 32 pixels and around 50 pixels (a website header). Thin lines and small details usually vanish.
- Add the name. Use a design tool for proper lettering and alignment.
- Start fresh when it drifts. If the model stops following edits after a long chat, open a new chat and upload the latest version.
The text problem, and how to get around it
Nano Banana is much better at text than older image models, and Google says text rendering is supported in more than ten languages. It still makes mistakes, particularly with unusual brand names and long phrases. A reviewer testing logos found a mock-up that printed the wrong name. There are two reliable ways to cope:
- Text-first. Google suggests talking through the wording with the model first, then asking for the image that includes it. This helps with short taglines.
- Symbol now, name later. Ask for the symbol only, then type the brand name in an editor. This takes a few extra minutes and removes spelling risk.
File formats: why your logo may not scale
Nano Banana returns ordinary pictures (PNG or JPG style files). A professional logo is normally a vector file, which stays sharp at any size. Asking the model to produce an SVG often gives crooked results. So if you need a business logo for print or signage, plan on one of these:
- Hand the chosen concept to a designer to redraw as a vector.
- Use a vector-tracing tool and clean up the result by hand.
- Keep the AI logo for web and social use only, where a good-sized image is enough.
Check the legal basics
- Don’t copy another brand. Never ask for a lookalike of a famous logo. Models can drift toward familiar shapes, so compare your result with similar logos in your industry.
- Search for trademarks. Look up your name and symbol in the trademark database for your country before you commit.
- Understand ownership. The rules on copyright for AI-generated images vary by country and are still developing. If the logo is central to your business, speak to a qualified lawyer.
- Keep your records. Save your prompts and versions as evidence of how the logo was created.
We aren’t lawyers, and this is information only. Our disclaimer explains this site’s role and independence from Google.
Mistakes that waste time
- Asking for a long name, a tagline and an icon in one prompt.
- Using five or six colours.
- Choosing a design that only looks good when large.
- Editing the same image for twenty rounds without restarting.
- Skipping the trademark search.
Frequently asked questions
What is a good Nano Banana logo prompt?
Name the logo type, the brand and its personality, one main symbol, a flat style, two or three colours, the layout and what to avoid. For example, ask for a simple icon logo with a single object on a plain background and no gradients or tiny details.
Can Nano Banana write text in a logo?
It handles text far better than older image models, and Google says it supports text in over ten languages. Mistakes still happen with unusual names. Put the exact words in quotes, keep them short, or add the name later in a design tool.
Does Nano Banana make vector or SVG logos?
Not reliably. It produces normal image files, and requests for SVG often give crooked results. For print or signage, ask a designer to redraw the chosen concept as a vector, or use a tracing tool and clean it up.
How do I make my AI logo look good when small?
Shrink it to about 16, 32 and 50 pixels and look again. Thin lines and tiny details disappear. Ask for thick even outlines, two or three flat colours, high contrast and a single clear shape.
Can I use a Nano Banana logo for my business?
Often yes, but check first. Search trademark databases for your name and symbol, avoid anything close to an existing brand, and read Google’s current terms. Copyright rules for AI images vary by country, so speak to a lawyer if the logo matters.
How many logos should I generate before choosing one?
Plan for a batch. Some reviewers suggest dozens of generations, with only one or two in every ten worth refining. Pick the clearest shape, refine it with one change per message, and start a new chat if the model stops following edits.
Making the most of Nano Banana for logos
Use it to explore ideas, narrow them down and test them in context, then finish the file properly. For other creative formats, see the Gemini and Nano Banana section and our guide to the Pro model, which can help with trickier text. You can read how we test advice like this on our how we test page, or return to the homepage.
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