Captioner

Part of speech: noun

Definitions

1. A person who creates or writes captions for images, videos, or presentations to provide explanatory or descriptive text alongside visual content
2. One who is responsible for generating brief texts that accompany pictures or multimedia, helping to clarify or enhance understanding of the visuals
3. An individual who produces or composes short descriptive or explanatory statements linked with visual media to aid viewers in interpreting or contextualizing the content

Etymology: "Captioner" is a plain formation: the noun "caption" with the agent suffix "-er," so it names a person who writes captions. The base word "caption" came into English with the sense of a heading or title for a chapter, document or picture, and the suffix attaches to it in the usual way that turns an action into the person doing it, as in "writer" or "reader." Because the formation is so transparent, the word needs little more than that, and its meaning follows directly from the two parts: someone whose job or task is supplying text that accompanies an image.

Synonyms: subtitler, transcriber, annotator, text provider, subtitle creator