How can I embed all linked images into a .docx file?
Solution 1:
This is called document preparation, where you break the links before sharing:
With your Word document open, click the Office button*, top-left of the window.
Select Prepare > Edit Links to Files.
Select and highlight the images you want to convert from the list.
Select the option to Save picture in document.
Click the Break Link button.
Click Yes to confirm.
Note that most Microsoft Office formats are called Work In Progress formats, you should share XPS or PDF files with end users rather than doc or docx files which are not intended for the wide public. When you save to XPS or PDF, the images will automatically be embedded.