Upload and start a print file on a Prusa printer via PrusaLink's file API
domain: github.com/prusa3d/Prusa-Link-Web · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
PUT the raw file bytes to /api/v1/files/{storage}/{path} (e.g. storage=local) with Content-Length and Content-Type headers set.
Set the Print-After-Upload request header to "?1" to start printing immediately after a successful upload, or "?0" to just store it.
Set Overwrite: "?1" when intentionally replacing an existing file; otherwise a 409 Conflict is returned on a name collision.
POST to the same file path with an empty body to start a print of an already-uploaded file when no job is currently running.
DELETE the file path to remove it, which fails with 409 if that file is currently printing.
Known gotchas
The boolean-style header values use RFC 8941 structured-field syntax ("?0"/"?1"), not plain "true"/"false" strings.
Printers without the upload-by-put capability (checked via /api/version) don't support this v1 PUT flow and require the older OctoPrint-compatible upload instead.
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