- Why most copied prompts come back looking wrong
- A worked example: turning a phone photo into a usable listing photo
- Portrait and personal photo prompts
- Background and setting swap prompts
- Outfit, colour and detail changes
- Restoring and colourising old photos
- Couple, group and seasonal prompts
- Step by step: how to run these prompts
- The part about faces that most guides skip over
- A note on naming the model
- Frequently asked questions
The short version: Gemini's photo editing model (the one people nickname Nano Banana) responds best to prompts built from four parts: the subject, the exact change, the style reference, and what must stay the same. Below are ready-to-use prompts for portraits, backgrounds, outfits, lighting, old photo restoration and group shots, plus the one thing about faces and skin tones that most "copy this prompt" articles never mention.
Why most copied prompts come back looking wrong
If you've pasted a prompt from a random listicle and got a melted face or a hand with seven fingers, the prompt wasn't the problem. The structure was. Gemini's image model isn't reading your prompt like a creative brief, it's reading it like an instruction set, and vague instructions get vague results.
A prompt that works reliably has four parts in this order: who or what is in the photo, exactly what changes, what style or reference it should match, and what must stay untouched. Drop any one of those four and the model fills the gap with a guess, which is usually where things go wrong. "Make this photo look professional" is a wish. "Keep the person's face, pose and clothing exactly as they are, replace the cluttered kitchen background with a plain soft grey studio backdrop, and add even studio lighting from the left" is an instruction.
A worked example: turning a phone photo into a usable listing photo
Say you run a small home bakery and you've taken a photo of a cake on your kitchen counter, with a mug, some crumbs, and your washing basket visible in the background. You want it to look like something you'd see on a bakery's Instagram grid, not a snapshot.
Instead of asking Gemini to "make it look nicer," try this exact prompt:
- "Keep the cake exactly as it is, including its colour, texture and the plate it's sitting on. Remove everything else from the background and replace it with a clean white marble surface and soft natural window light coming from the left. No text, no props, no hands in frame."
Notice what's happening: the cake (subject) is protected, the background swap is specific (white marble, not "a nice background"), the lighting direction is named, and there's an explicit exclusion list at the end. That exclusion list is doing more work than people realise, because it stops the model adding a stray spoon or a logo that was never there.
If the first result still has a shadow in the wrong place, don't start over. Add one line to the same conversation: "Keep everything the same, just move the light source slightly more overhead so the shadow falls directly behind the cake." Gemini holds context within a chat, so refining in small steps gets you closer than rewriting the whole prompt from scratch each time.
Portrait and personal photo prompts
These are the ones most people want, whether it's a LinkedIn headshot, a dating profile photo, or something just for fun.
- "Keep my face, expression and hairstyle exactly as they are in this photo. Change only the outfit to a tailored navy blazer over a white shirt, and replace the background with a softly blurred neutral office setting."
- "Keep my face and pose unchanged. Adjust the lighting to warm golden-hour light coming from behind and slightly to the right, and add a subtle lens flare. Do not alter my skin tone or facial features."
- "Turn this photo into a professional studio headshot. Keep my face identical, add a plain charcoal grey backdrop, soft even lighting from both sides, and a slight depth-of-field blur behind me."
If you want something more playful than professional, it's worth looking at a dedicated set of funny AI prompts for pictures of yourself, because the prompt structure for comedy (exaggeration, absurd setting, specific prop) is almost the opposite of the structure for a polished headshot.
Background and setting swap prompts
- "Keep the subject, their pose and clothing exactly as they are. Replace the background with a quiet library interior, warm wooden shelves, soft diffused light, nothing else changed."
- "Keep the subject unchanged. Replace the background with a blurred city street at night, with soft bokeh lights, as if shot on a wide aperture lens."
- "Keep the subject in the same position and lighting direction. Replace only the background with a plain cream studio backdrop suitable for an e-commerce product listing."
Outfit, colour and detail changes
- "Keep the person's face, pose and background exactly the same. Change the outfit to a red knee-length dress with a fitted waist, and adjust shadows on the fabric to match the existing light source."
- "Keep everything in the photo unchanged except the colour of the car, which should become matte dark green instead of silver. Match the reflections to the new colour."
- "Keep the composition identical. Remove the person in the background on the left, and fill the space naturally with the existing wall and floor pattern."
Restoring and colourising old photos
This is one of the places Gemini earns its keep, because it's doing something a basic filter can't: inferring plausible colour and texture from a black and white source.
- "Colourise this black and white photo with natural, realistic skin tones and period-accurate clothing colours for the 1950s. Keep the composition and facial details exactly as they are, do not add or remove anything."
- "Restore this damaged photo. Remove scratches, creases and discolouration, sharpen the facial details, and keep the original expression and pose unchanged. Do not alter clothing style."
If this is specifically what you're after, there's a fuller breakdown of free tools and settings in the piece on where to colourise old black and white photos with AI free, which covers a few alternatives alongside Gemini.
Couple, group and seasonal prompts
Group photos are where Gemini struggles most, because it has to keep multiple faces, poses and lighting conditions consistent at once. The fix is to be stricter, not looser.
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- "Keep both people's faces, expressions and poses exactly as they are. Change only the background to a warm autumn garden with soft evening light, and match the lighting on both subjects to that new setting."
- "Keep the two subjects and their outfits unchanged. Add a festive string-light background and warm amber lighting, without changing their faces or body positions."
There are also occasion-specific sets worth copying wholesale rather than reinventing: the Karwa Chauth AI photo prompts for Gemini for couple edits, and a seasonal batch of Halloween photo edit prompts for Gemini if you're working around a specific date rather than a general portrait.
Step by step: how to run these prompts
- Open Gemini (app or web) and start a new chat, or use Google's AI Studio if you want more control over the model version.
- Upload your source photo first, before typing anything.
- Paste a full four-part prompt (subject, change, style, what to keep) rather than a short instruction.
- Review the result and make one correction at a time in the same chat thread, not a fresh prompt.
- Download at full resolution. Gemini's free tier through the app has generous daily limits for casual use, but if you're editing photos for client work or a product catalogue regularly, a paid Gemini Advanced subscription (around $20 a month) removes the daily ceiling and gives you the newer model versions first.
- Keep your original file. Every edit is generative, not corrective, so if you want to try three different backgrounds, start each from the original, not from the previous edit.
The part about faces that most guides skip over
This needs saying plainly: Gemini's image model, like every other major image generator, was trained predominantly on lighter-skinned, Western-style photography. In practice that means prompts asking it to "keep skin tone unchanged" work less reliably on darker skin tones, where the model has a tendency to subtly lighten or flatten texture even when told not to. It's not malicious, it's a training data gap, and it shows up most on skin, hair texture, and certain religious or cultural clothing details.
The workaround isn't glamorous. Be more explicit than feels necessary: name the exact skin tone ("deep brown, warm undertone, keep identical"), name the hair texture, and check the result against the original at full zoom before you use it anywhere public. If it's drifted, say so directly in the next message: "the skin tone has lightened, correct it back to match the original exactly." It usually takes one or two corrections rather than one. That's not a flaw you'll see mentioned in most prompt roundups, but it's the difference between a polished edit and one that quietly misrepresents the person in it.
The same honesty applies to consistency across a set. If you're building a batch of 40 similar portrait edits, for example the kind covered in Gemini AI photo prompts for girls with 40 edits, expect each one to need its own small correction pass. The model does not remember your style choices from one photo to the next unless they're in the same chat thread, so copying one prompt across 40 separate uploads will give you 40 slightly different interpretations of "studio lighting."
A note on naming the model
You'll see Gemini's image editing referred to as Nano Banana in a lot of prompt communities, which is simply the nickname that stuck after Google's internal codename leaked out before an official launch. If you want a longer reference list beyond portraits and restorations, there's a broader set of Nano Banana prompts with 40 copy-paste Gemini image edits covering products, food, pets and travel photos too.
Frequently asked questions
Do Gemini photo editing prompts work on any phone photo?
Yes, but quality in equals quality out. A blurry, badly lit original will still produce a blurry, oddly lit edit underneath the new background or outfit, because Gemini edits onto the existing detail rather than rebuilding the photo from scratch.
Why does Gemini change my face slightly even when I ask it not to?
Every generation involves some reinterpretation, so small drift in skin tone, jawline or expression is normal, especially on darker skin tones where the model's training data is thinner. Always compare the result to the original at full zoom and correct it in the same chat if it's drifted.
Is the free version of Gemini enough for regular photo editing?
For occasional personal use, yes. If you're editing photos daily for a business, a shop listing, or client work, the paid Gemini Advanced tier (roughly $20 a month) removes the daily generation cap and gives earlier access to model updates.
Can I use these prompts for commercial product photos?
Yes, with care. Keep your original product shot untouched, be exact about background and lighting changes, and always check colour accuracy against the real product before publishing, since generative edits can subtly shift shade and texture.