OptionalfirstTry an empty password before consulting passwordProvider. Default: true.
OptionalheadersExtra HTTP headers for the fetch (e.g. authorization).
OptionalpasswordSupplies passwords for encrypted documents; see PdfPasswordProvider for retry semantics.
OptionalpreferAccess the file via HTTP range requests instead of downloading it whole. Requires a CORS-enabled server that honors range requests.
OptionalprogressInvoked as the document downloads (see PdfDownloadProgressCallback).
OptionalsourceIdentifier used in error messages and for caching purposes.
OptionaluseLoad only the first page eagerly; call PdfDocument.loadPagesProgressively for the rest.
OptionalwithWhether the fetch includes credentials (cookies, HTTP auth).
Options for PdfrxEngine.openUrl; extends PdfOpenOptions with fetch-related settings.