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Signal is a messaging application focused on privacy. Its source page describes end-to-end encryption via the open source Signal Protocol, and support for text, voice messages, photos, videos, GIFs, files, voice and video calls and group chats. It is described as free, with no ads or trackers, and as an independent nonprofit.
2pdfconverter.com is an online PDF conversion and editing toolkit. It converts Word, Excel and PowerPoint documents to PDF, and converts PDF to Word, text, JPG and HTML. It also offers signing, rotating, merging, splitting and shrinking PDFs. The service is free, files are removed from the server after conversion, and converted files remain downloadable for 1 hour.
