The phrase "a caption that read" is correct and usable in written English.
It can be used when describing a caption that was present in a text, image, or other media, typically in a narrative or descriptive context.
Example: "As I flipped through the pages of the book, I came across a photograph with a caption that read, 'A moment frozen in time.'"
Alternatives: "a caption that stated" or "a caption that said".
A naked woman tied up and gagged with a caption that read, "She Left the Kitchen Only Once".
He spotted a thumbnail picture with a caption that read "Old Snapshot Blues Guitar BB King???" and bought it.
The BBC uploaded a video comparing the two adverts with a caption that read "This ad looks familiar.
Finally after seeing a caption that read "JAY LENO: Kicking Letterman's butt," Robert Morton, the executive producer of "The Late Show," had had enough.
The team posted their memorial on YouTube with a caption that read: "Paul Walker's family appreciates the outpouring of love and goodwill from his many fans and friends.
The first, from Aug. 22, had a caption that read: "In Damascus, the bodies of people who Syrian rebels and supporters say were killed on Wednesday in a government attack".
The New Jersey Attorney General's office is circulating posters in clubs and schools with a photograph of a rave and a caption that reads: "Narcs can dance".
One series shows Mr. Lamb lying face-down in a bowl of chicken soup, above a caption that reads "Dying from bird flu".
A series of images of tsotsis, young black gangsters, picking the pockets of white men is accompanied by a caption that reads: "Whites are angered if touched by anyone black, but a black hand under the chin is enraging.
A 2007 annual report for the clinic has a picture of Dr. Wakefield looking into microscope with a caption that reads: "Where would we be without Dr. Wakefield and your entire team?
The photo shows the mother happily looking down at her son while he breastfeeds with Santa pointing next to them, with a caption that reads: "All I want for Christmas is a happy healthy baby".
