A picture paints a thousand words.
Or more accurately: a picture is worth a thousand words is a fitting phrase to describe how a picture tells a story just as well as wordy, descriptive text (the latter quote was adapted into the former by David Gates (of Bread fame) for the album: Manna).
I’d even go as far as saying that today pictures speak louder than words.
To coin a Chinese proverb: one picture is worth ten thousand words. Which is why Instagram is so big.
Snap a photo with your mobile phone, choose a filter, and you’ve a picture to share with the world. It’s faster than news, it’s beautiful to look at, it’s straightforward to share, and people respond more swiftly to pictures than words.