Dall-e API Request gives 400 when image is over 300kb

API
,
1

I am sending a Dall-e image edit request. The API works fine, when the image is small (under 300 kb). But a bit over, and it just returns this:

{
    "error": {
        "message": "Error in request. Please check your input.",
        "type": "invalid_request_error",
        "param": null,
        "code": null
    }
}

I can’t really figure it out since the docs say that any PNG under 4MB is fine.

The rest of my request is (form data):

prompt: "A cute baby otter going to space"
model: "dall-e-2"
image: <the file above>

A smiling otter floats happily in clear blue water. (Captioned by AI)
A smiling otter floats happily in clear blue water. (Captioned by AI)1024×1024 110 KB

The photo above is originally just under 2mb. Am I missing anything obvious?

2

nvm, I didn’t read the docs and turns out you need to add an alpha channel if not mask.