application/octet-stream resolves from the file extension
By Steven Van ·
Notion's File Upload API now resolves the real file type from the filename when a client sends a generic application/octet-stream label.
Notion's Notion File Upload API no longer treats a generic application/octet-stream content type as final. When an HTTP client can't infer a MIME type from a file and labels it application/octet-stream, the Create a file upload and Send a file upload endpoints now resolve the real type from the filename extension, or from the content type set at creation. Files with unsupported extensions are still rejected.
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