Venice Image Editing

Four endpoints, all operating on existing images:

Endpoint	Purpose
`POST /image/edit`	Transform one image with a text prompt.
`POST /image/multi-edit`	Composite / layer several images with a single prompt. Also has a `multipart/form-data` variant.
`POST /image/upscale`	Upscale 2× or 4×.
`POST /image/background-remove`	Produce a transparent cutout.

For text-to-image generation, see venice-image-generate.

Shared rules

Input image accepts base64 string, file upload (multipart for /image/multi-edit), or HTTPS URL (for edit + multi-edit + background-remove).
File size < 25 MB. Image dimensions must be between 65,536 (256×256 equivalent) and 33,177,600 pixels (~5,761×5,761). Upscale caps at 16,777,216 pixels after scaling.
HTTPS URLs must be publicly reachable from Venice's network.
All four endpoints return the image as binary, never JSON. There is no return_binary field on edit / multi-edit / upscale / background-remove (that flag only exists on /image/generate). /image/edit and /image/multi-edit return image/png, image/jpeg, or image/webp depending on output_format; /image/upscale and /image/background-remove always return image/png.