- The catch most people miss
- How to change a background, step by step
- The face lock line
- Clean and professional backgrounds
- Nature and travel backgrounds
- Festival and event backgrounds
- Fun and creative backgrounds
- Which tool for which background
- Fixes when the result looks off
- Use your own photos
- My advice
- Frequently asked questions
A good background change prompt does two jobs: it tells the AI exactly what the new background should be, and it tells it to leave you alone. Upload your photo to Gemini or ChatGPT, paste one of the prompts below, and always keep the line that locks your face, pose and clothes. In Gemini, photo editing is only open to accounts aged 18 or over.
Changing a background is the edit AI handles best, which is why it's the first thing most people try. It's also where faces quietly change, because a vague prompt lets the tool redraw the whole picture. The prompts here are written to stop that, and they're grouped by the kind of background you want.
The catch most people miss
OpenAI's own help page says that when you use the selection tool in ChatGPT's editor, the highlight isn't always precise and edits may spread beyond the area you selected. So even if you carefully paint over the background, say in words that the person must stay unchanged. On the Gemini side, Google's help page is clear that editing images isn't available to users under 18, so if the edit option is missing, check the age on the account first.
How to change a background, step by step
- Open Gemini or ChatGPT and upload the photo you want to edit.
- In ChatGPT you can open the image editor and use Select to highlight the background, or simply describe the change in the chat.
- Paste a prompt from below and swap in your own details.
- If something drifts, reply in the same chat with one fix at a time, such as 'keep the original hair colour'.
- Download the result. Gemini saves at 1K without an AI plan and 2K with one.
If a menu looks different in your version, search the app's tools or settings for the word 'edit'.
The face lock line
Put this at the start of every background prompt. It's the single line that makes the biggest difference.
Copy this prompt
Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Keep my pose, hair and clothes unchanged. Change only the background.
Clean and professional backgrounds
Plain studio
Copy this prompt
Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Replace the background with a plain light grey studio backdrop, soft even lighting, no shadows behind me. Photorealistic.
Office for a profile picture
Copy this prompt
Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Replace the background with a softly blurred modern office with plants and natural window light. Keep it subtle so I stay the focus.
Transparent background
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Remove the background completely and make it transparent. Keep clean edges around my hair.
OpenAI's help page confirms ChatGPT can make a background transparent, which is handy for stickers, thumbnails and product shots.
Nature and travel backgrounds
Beach at sunset
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Put me on a quiet beach at sunset, warm golden light on my face that matches the sky, gentle waves behind me. Photorealistic.
Mountain viewpoint
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Place me at a mountain viewpoint with misty valleys behind, cool morning light, natural colours, realistic shadows on the ground.
City at night
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Change the background to a city street at night with softly blurred lights, slight reflections on wet pavement, cinematic but realistic.
Garden
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Replace the background with a blooming garden in spring, flowers slightly out of focus, bright soft daylight.
Festival and event backgrounds
Festival lights
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Change the background to a courtyard decorated with string lights and lanterns at night, warm glow, festive but not cluttered.
Wedding stage
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Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Put me in front of a floral wedding stage with soft fairy lights, elegant and realistic, matching light on my face.
Birthday party
Copy this prompt
Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Replace the background with a cheerful birthday party setting with balloons and a cake table, bright indoor light.
Fun and creative backgrounds
Painted backdrop
Copy this prompt
Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Replace the background with a hand painted watercolour scene of hills and trees, while I stay photorealistic in front of it.
Space scene
Copy this prompt
Use my uploaded photo. Keep my face, features, expression and skin tone exactly the same as in the uploaded photo. Put me in front of a dreamy galaxy sky with soft purple and blue tones, glowing light on my edges, playful but clean.
Which tool for which background
| You want | Easiest in | Why |
|---|---|---|
| Several photos blended into one scene | Gemini | Google says you can upload several images and ask for a new image based on them |
| A transparent background | ChatGPT | OpenAI lists transparent backgrounds as a feature |
| A precise area changed | ChatGPT | The editor's Select tool, plus words to back it up |
| A specific shape for social media | Either | ChatGPT has an aspect ratio picker; in Gemini, add the ratio to the prompt |
Fixes when the result looks off
- Face changed: start a new chat, upload the original again and put the face lock line first.
- Looks pasted on: ask for the light on your face to match the light in the new background.
- Hair edges look cut out: add 'keep natural soft edges around my hair'.
- Too busy: ask for the background to be softly blurred so you stay the focus.
Want more ready prompts? Try these Nano Banana prompts for Gemini edits and, if the photo itself needs work first, these prompts to enhance photo quality.
Use your own photos
Only edit photos of yourself or of people who've said yes. OpenAI's usage policy doesn't allow using someone's photorealistic likeness without their consent in ways that could confuse people about what's real, and Google asks users not to break other people's privacy rights. And don't use AI backgrounds on ID, passport or official document photos.
My advice
Start with a plain studio or softly blurred background before you try anything dramatic. It's the quickest way to see how well the tool keeps your face, and once you're happy with that, the beach and festival prompts will work far better. Keep the face lock line in every single prompt, even when it feels repetitive.
Frequently asked questions
How do I change a photo background without changing my face?
Upload the photo, then start your prompt with a line telling the AI to keep your face, features and skin tone exactly the same and to change only the background.
Can ChatGPT make a background transparent?
Yes. OpenAI's help page says ChatGPT Images can make the background transparent when you ask for it.
Why can't I edit photos in Gemini?
Google's help page says editing images isn't available to users under 18. Check the age on your Google account and update the app.
Why did the edit spill outside the area I selected?
OpenAI says highlights in the ChatGPT editor aren't always precise and edits may extend beyond the selection, so describe what must stay unchanged in your prompt too.
