A picture is worth a thousand words

"A picture is worth a thousand words" is an English idiom. It refers to the notion that a complex idea can be conveyed with just a single still image or that an image of a subject conveys its meaning or essence more effectively than a description does.

The expression "Use a picture. It's worth a thousand words." appears in a 1911 newspaper article quoting newspaper editor Tess Flanders discussing journalism and publicity.

A similar phrase, "One Look Is Worth A Thousand Words", appears in a 1913 newspaper advertisement for the Piqua Auto Supply House of Piqua, Ohio.

An early use of the exact phrase appears in an 1918 newspaper advertisement for the San Antonio Light, which says:

One of the Nation's Greatest Editors Says:

One Picture is Worth a Thousand Words
The San Antonio Light's Pictorial Magazine of the War
Exemplifies the truth of the above statement—judging from the warm

It is believed by some that the modern use of the phrase stems from an article by Fred R. Barnard in the advertising trade journal Printers' Ink, promoting the use of images in advertisements that appeared on the sides of streetcars. The December 8, 1921, issue carries an ad entitled, "One Look is Worth A Thousand Words." Another ad by Barnard appears in the March 10, 1927, issue with the phrase "One Picture Worth Ten Thousand Words", where it is labeled a Chinese proverb. The Home Book of Proverbs, Maxims, and Familiar Phrases quotes Barnard as saying he called it "a Chinese proverb, so that people would take it seriously." Nonetheless, the proverb soon after became popularly attributed to Confucius. The actual Chinese expression "Hearing something a hundred times isn't better than seeing it once" (, p bǎi wén bù rú yī jiàn) is sometimes introduced as an equivalent, as Watts's "One showing is worth a hundred sayings". This was published as early as 1966 discussing persuasion and selling in a book on engineering design. In March 1911, in the Syracuse Advertising Men's Club, Arthur Brisbane wrote: "Use a picture. It's worth a thousand words."

...
Wikipedia