Inputs

• Absolute path to a local input image
• Optional output path; default to an explicit sibling

  .png

Prepare Instructions

• Shell environment variables
• The current working directory

  .env

  only

• ~/.transloadit/credentials

.env

steps.json

• For the current CLI, the file passed to

  --steps

  must be a flat object keyed by step name.
• Do not wrap the steps under a top-level

  "steps"

  key.

{
  ":original": {
    "robot": "/upload/handle"
  },
  "background_removed": {
    "use": ":original",
    "robot": "/image/bgremove",
    "format": "png",
    "result": true
  }
}

Run (Local Input Image)

npx -y @transloadit/node assemblies create \
  --steps ./steps.json \
  -i ./input/source.jpg \
  -o ./out/result.png

./input/source.jpg

Debug If It Fails

npx -y @transloadit/node assemblies get <assemblyIdOrUrl> -j

• Keep

  format: "png"

  so the downloaded output preserves transparency.
• Prefer

  ~/.transloadit/credentials

  as the default fallback when you want a reusable user-level setup.
• A current-directory

  .env

  still takes precedence, so avoid it when deterministic account selection matters.
• If credentials only exist in a repo-root

  .env

  , run the command from that directory or export the variables first.
• Prefer an explicit PNG filename like

  ./out/result.png

  . With the current CLI, using a directory output for a single result may preserve the input path instead of giving you a

  .png

  filename.
• Prefer a clear foreground subject photo; background removal quality depends on the source image.