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  "path": "/t/gpt-image-2-image-creator-and-editor-app-python-desktop-ui-message-13/1370104#post_16",
  "publishedAt": "2026-05-23T20:15:59.000Z",
  "site": "https://community.openai.com",
  "textContent": "## Transparency creation tool included\n\nOpenAI doesn’t deliver transparency as an API feature on gpt-image-2 (while ChatGPT, instead, is delivering transparency by request). If OpenAI changes their mind, I left in the UI option to send transparent background parameter (which is denied currently).\n\nI’ve added transparency creation in the application, though. This can be used to post-process both generated images and files that you load.\n\n### Example prompt:\n\n\n    The image shall have a transparent background outside of the subject, easily removed: the background area for transparency is a pure white chroma-key, with this brilliant white background for keying and cutting out and making transparency being sharp, pixel-perfect, without any blending or fading. Avoid pure whites and specular highlights in the main image content.\n\n\nYou can also prompt for black or a green-screen, depending on the subject and the quality of the model’s sharp cutoff.\n\n### Example application use:\n\n_Defaults are already configured for good performance_\n\nRemoving lighter-than or darker-than is automatically switched depending on the value of your key color.\nThe status bar will show the image’s color value you mouse-hover over, as (253, 251, 250) of max 255. Then pick it to preview the effect.\n\n#### Color removal to transparency\n\n_Select color key with mouse color picker, and refine cutout with fuzziness control_\n\n\n\n\n\n### Smoothing - Alpha channel blending\n\nIf you are using a 32 bit color delivery format file when you save (i.e. the default PNG the app saves), instead of a sharp threshold where pixels are either original or transparent, you can have a color-blending alpha transparency, where the edges fade out. Tune this by increasing the _smoothing_ control.\n\nThis will appear best if your image has a background key color that is also the expected page color you’ll show it on, or where the contents have a natural feathering to them, otherwise your image might have a color halo.",
  "title": "Gpt-image-2 image creator and editor app - Python, desktop UI (message #13)"
}