Sequencing photo edits for a product catalogue

Editing a catalogue photograph is a short list of operations: check the result, remove the background, set the framing, reduce the size, flatten where a destination requires it. Written out like that, the list looks like a set of independent tasks that could be done in any convenient order.

It is not. Two of those operations read information that another one of them removes. Run them one way and each step has what it needs; run them the other way and a step arrives to find that what it was going to work from is already gone. The file that comes out is not a slightly worse version of the same thing — it is a different result, produced by the same instructions.

That is the practical reason to fix an order once and then stop deciding it per image. The order is not a preference about workflow tidiness. It follows from which steps subtract.

Sort the operations into two groups. In the first group are steps that change what the file describes while keeping the material to work from: a crop decision, a background removal, a correction judged against the full-size image. In the second group are the reductions — making the picture smaller, and replacing transparency with a colour. A reduction leaves the file holding less than it held before, and no later step restores it.

Once the list is sorted that way, the sequence follows on its own: everything in the first group runs while the file is still complete, and the second group runs at the end, on copies, as late as the destination allows. This is the same principle as keeping a source and making renditions from it, which the multi-channel page sets out; the sequencing view simply says which individual steps are the renditions.

The cutout is the clearest case. Removing a background is a decision about the boundary between the piece and everything behind it, and jewelry has the least forgiving boundary of any product category: open links, prongs, a clasp with a gap in it, a chain that is mostly edge. Reduce first and that boundary has already been coarsened before the step that depends on it runs. Remove the background first and the reduction afterwards is only a reduction — the boundary decision has already been made from the complete file.

The background remover returns transparency by design, which the multi-channel page explains along with why that single file receives different verdicts at different destinations. What matters for sequencing is narrower: transparency is a state the file can be in, and flattening is the step that leaves it permanently.

So transparency should enter the sequence early, at the cutout, and end as late as possible — after the framing decision, after the size reduction, on a copy made for the one destination that requires it. Etsy does not support transparent PNGs and transparent areas appear black there, and the Etsy page carries what that means for what you upload. Treat that as a rendition requirement rather than as a property of your source file.

The failure this avoids is quiet. A flattened file looks correct, opens correctly, and uploads correctly. Nothing announces that the transparency is gone. It only becomes apparent later, when a second destination needs the cutout and the only remaining file has a background permanently attached to it.

The app occupies one position in this sequence: it produces the result you begin from. It does not render a picker for output size, background or aspect ratio, and the result arrives at a fixed size rather than one you select. Framing, resizing and flattening are therefore steps you run afterwards in your own editor, and there is no per-destination export inside the app to run them for you.

This makes the first step of the sequence a check rather than an edit. The prompt instructs the model to preserve mirrored and duplicated elements and to keep openings, links and closures as they are — earrings are instructed to hold their pair, and openings are instructed to stay open. Instructed is not the same as guaranteed, which is why the comparison against the real piece happens before any editing, while the evidence is still at full size and while the report control is still the appropriate response.