Upload an existing file to Macro from base64-encoded bytes, up to 25 MiB decoded. Use for PDFs, images, Office files, and other files; use CreateDocument for generated text or native Macro spreadsheets. Encode actual file bytes programmatically; never invent or transcribe binary content. Returns a document ID after the bytes are uploaded; preview and indexing may finish asynchronously. Does not read local paths or fetch URLs.
Filename including its extension, for example report.pdf. Do not include a directory path.
contentBase64
string
Yes
Standard padded base64 of the exact file bytes (maximum 25 MiB decoded). No data URL prefix or whitespace. Prefer constructing this argument programmatically from the file.
projectId
string
No
Optional destination project (folder) ID. Requires edit access. Omit to upload to the user’s top-level files.
