Cutouts That Hold Up at Full Size

What it is for

Four subjects fail cutouts reliably — hair, glass, motion blur and low contrast against the background — and re-uploading the same file does not fix any of them. This says what to do instead, per subject.

The skill Copy

The API is excellent on a clear subject and predictably weak on four things.
Recognise them before spending credits.

**Hair and fur.** Request the highest resolution the plan allows and check at
100%, not in the thumbnail. A cutout that looks perfect at 400px can have a
hard halo at full size. If the background was busy, re-shoot or re-source
before re-processing.

**Transparent and reflective objects** — glass, bottles, jewellery. The tool
removes what is BEHIND them as well, because it cannot tell the difference.
Composite these by hand.

**Subject-coloured backgrounds.** A grey jacket on a grey wall loses its edge.
Nothing in the settings fixes this; the input is the problem.

**Fine structure** — bicycle spokes, mesh, lace. Expect to fix these manually.

Two settings worth setting every time:
- Output as PNG, not JPEG. A JPEG cutout has no alpha channel at all, and the
  failure is a white box that nobody notices until it is on a coloured page.
- Add a small `crop_margin` rather than cropping tight. Tight crops are
  unrecoverable later.

How to install it Copy

1. Open the tool and start a new conversation, project or template.
2. Paste the text below wherever the tool keeps standing instructions
   — usually called system prompt, instructions, or persona.
3. Save it so it applies to every run rather than a single message.

Did it work for you?

Where it came from