If you have the Word source, edit it and export a new PDF. If you only have a PDF, distinguish page operations from editing the text or images inside a page before choosing an app.
Before choosing a task
Decide whether you need only the page appearance or must also preserve forms, annotations and digital signatures.
Choose scanning and OCR for paper documents, or a merge/split tool for existing PDF pages.
Before sharing, check page count, page breaks and readable text in another viewer.
This guide explains how to get LibreOffice from its official source and use its core features. It explains how to create a document using an open-source office suite and generate a PDF for distribution while preserving the original ODT.
This guide explains how to get SumatraPDF from its official source and use its core features. It covers how to view PDF, EPUB, etc. on a minimal interface and use tabs, search, and shortcuts.
This guide explains how to use the free PDFsam Basic to merge PDFs in a specified order and split a PDF at selected page positions. It also clarifies the differences among Basic, Visual, and Enhanced.