Is Highlight Magic safe?

This extension highlights chosen words on websites with customizable lists, colors, and matching options.

Highlight Magic lets users create word lists and assign colors or styles to highlighted terms on web pages. It supports importing and exporting lists, organizing words into groups, quick search, case-sensitive matching, regex tokens, complete-word matching, and site or page blacklists. The description also mentions a sync function for transferring lists across devices, but no specific data recipient is identified.