Why Can't Gemini Generate Images with Transparent Backgrounds?

#1

Post by rukshn » Sun, Dec 21, 2025, 8:47 AM UTC

Why Can't Gemini Generate Images with Transparent Backgrounds?
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Re: Why Can't Gemini Generate Images with Transparent Backgrounds?

#2

Post by vunderba » Sun, Dec 21, 2025, 4:42 PM UTC

It's a pretty well known problem in the generative image domain. GPT-image-1 (and gpt-image-1.5) are outliers in their ability to generate images with a proper alpha channel.

You can still use other models (Flux, SDXL, NB, etc), you'll just need to request that the image be generated on a solid colored blackground. Then just run it through Rembg [1] or similar background removal tool.

[1] - https://github.com/danielgatis/rembg

Re: Why Can't Gemini Generate Images with Transparent Backgrounds?

#3

Post by rukshn » Mon, Dec 22, 2025, 10:26 AM UTC

vunderba wrote: post #2

It's a pretty well known problem in the generative image domain. GPT-image-1 (and gpt-image-1.5) are outliers in their ability to generate images with a proper alpha channel. You can still use other models (Flux, SDXL, NB, etc), you'll just need to request that the image be generated on a solid colored blackground. Then just run it through Rembg [1] or similar background removal tool. [1] - https://github.com/danielg…

But it's very interesting that ChatGPT can generate with transparent backgrounds where Gemini continues to fails despite being considered as a better image generation model.

The removing background manually not the best approach because it leaves some rough edges and not as smooth as as generating an image with transparent background