I have a requirement to convert an Office document (Word, Excel, PowerPoint, Visio) into a PDF within a workflow but this option doesn't seem to be available in O365.
I know older versions had an action "Convert Document" but this seems to be missing so has anyone else acheived this in Office 365?
We use Muhimbi in combination with Nintex Workflow for Office 365 to Convert Office files to PDF. You can find the Muhimbi blog post here: http://blog.muhimbi.com/2017/08/use-nintex-workflow-for-office-365-to.html
Details about file formats supported by Muhimbi see http://support.muhimbi.com/entries/21260133-what-file-formats-are-supported-for-conversion
You can use a Microsoft Flow to convert your office documents, by using the action "Convert File" in the One drive for business connector.
Or an exemple (first part) : http://johnliu.net/blog/2017/10/convert-sharepoint-files-to-pdf-via-flow
Or you can steel use Nintex and "Document Generation" to achive this task.
You stil use a predefined template, but just before using the document generation you can overwire your template with the file you want to convert (when you copy your file, rename it with the template name).
With this solution you are able to "convert" Word to pdf but this in not an optimized solution because you can't convert multiple files at the same time, you must use sevral template for each type of documet, and you always overwirte the same template file.