I’ve created a ChatGPT ‘GPT’ to assist in adding borders to images. The general purpose was to add a border to emulate a matte so the end result could be framed in cheap off-the-shelf frames of standard sizes.
You can ask the tool to ‘add a white border of 20 pixels to the image’ or ‘Please add borders to this image to allow for framing in a landscape 11×14 inch frame’ as examples.
Sometimes it does take a couple attempts to get where you need. The more detail you can specify up front about the required output (dimensions for example, or state the output is simply for web, or if the end result should be portrait or landscape) will assist.
The tool can be found here ( FrameFit GPT, and you should be able to provide feedback from within it.
You will need to be a ‘ChatGPT Plus’ user.