This endpoint was deprecated on March 24, 2026, and will be sunset on July 1, 2026. Please migrate your existing functionality to the current endpoint: https://developers.gonitro.com/docs/api-reference/sign/create-document-by-envelope-id , which already supports multiple file types.
The Convert File to PDF endpoint transforms various file formats into PDF documents for use with the Nitro Sign API.
Supported input document types and formats:
| Document Type | Formats |
|---|---|
| Doc | .doc, .docx, .dot, .xml, .docm, .dotx, .dotm, .rtf |
| Excel | .xlsx, .xls, .xlt, .xlsm, .xltx, .xltm |
| HTML | .html |
| Powerpoint | .pptx, .ppt |
| Image | .png, .jpg, .jpeg, .tif, .tiff, .gif |
| Other | .csv, .psd, .svg, .eps |
The Convert File Sign API endpoint only supports PDF files as output.
The Convert File endpoint supports only asynchronous processing. When you start a file format conversion, the request returns a job ID. Use this ID with the job endpoints to check the status and retrieve the results once the operation is complete.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
The file to convert to PDF, provided as binary data.
File conversion initiated successfully
URL to poll the current status of the file conversion job
"https://api.gonitro.dev/sign/conversions/jobs/01234567-89ab-cdef-0123-456789abcdef/status"
Unique identifier for the conversion job
"01234567-89ab-cdef-0123-456789abcdef"
The current status of the file conversion Job
running, completed, failed