After yesterday's review of a system that converts from PDF to an editable format such as Microsoft Word, here's something that works in the opposite direction. PDF Forte converts Word, Excel and PowerPoint files (and presumably Libre Office files too, as they use the same format) into PDF files.
The program used to be commercial but it's now free. You'll find it at http://pdfconverters.net/pdf-forte.html and it's a 39 MB download. Note that the "free trial" button is misleading - it's totally free.
The site is rated as trustworthy by Web of Trust. And the download itself is malware-free, according to VirusTotal. This was not previously the case, as VirusTotal was reporting a couple of false alarms. But since I notified the company about this a few weeks ago they've been working to fix the problem, and I'm glad to report that it is now fine.
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