How to make a YouTube thumbnail people click: promise, number, curiosity
Three ideas behind thumbnails that get clicked: promise, number and curiosity. When each one works, how to set the text, and examples from real sets we made.
A good thumbnail isn't a poster, it's a question mark. A viewer scrolling the feed stops for half a second and decides one thing: "Is there something in this for me?" A thumbnail can answer that in three ways.
1. Promise
It tells the viewer what they get. "From one planet to an empire", "first 1,000 subscribers in 3 months", "the 6 levels of wealth". Works well for guides, tutorials and gaming videos.
In the noir documentary, the promise thumbnail became "THE 6 LEVELS OF WEALTH": gold Cinzel letters over a six-tier pyramid. The viewer understands immediately that the video hands them a map.
2. Number
One striking figure. "$120,000 per car", "×1000", "$5M". A number catches the eye faster than words and it's concrete. Strong for finance, economics and comparison videos.
In the Ferrari vs Lamborghini set, "FERRARI MAKES $120,000 PER CAR" was built on this idea: the figure in yellow, huge, with a pile of money behind it.
3. Curiosity
A question or a contradiction the video resolves. "Same 28% margin… WHY?", "ADHD… or just a baby?", "Which tier?". The riskiest of the three, but when it lands it earns the most watch time, because viewers stay to get the answer.
Setting the text
- Three or four words at most. Shrink to 160 pixels; delete any word that doesn't read.
- One word emphasised. By colour or size: "BURGER" in yellow, the rest in white.
- Thick outline. So the edge doesn't vanish in dark mode.
- Don't repeat the title. If the title says "How McDonald's really makes money", the thumbnail says "It's not a burger company".
No face?
The stickman and parenting channel don't use faces, but the character's expression does the job: a frowning stickman, a crying baby and a worried mother. What matters is that the emotion reads at small size.
Try all three
If you don't know which works on your channel, make all three and measure them with YouTube Test & Compare. That's exactly what a Thumbnail Trio is: a promise, a number and a curiosity thumbnail for the same video. Examples on the YouTube thumbnails page.
Three thumbnails built on three different ideas for one video. Upload them to YouTube’s Test & Compare and let viewers pick the winner.
What’s in it 5
- 3 thumbnails, 3 separate hypotheses (promise · number · curiosity)
- 1280×720, under 2 MB, JPG + PNG
- Legibility check at phone size
- Title suggestion that doesn’t repeat the thumbnail
- Layered source file
Frequently asked
1.What makes a good YouTube thumbnail?
One idea, three or four words at most, a big face or main object, and strong contrast. The text should complete the title, not repeat it.
2.Do I need a face on my thumbnail?
No. On faceless channels a character, an object or a scene does the same job; what matters is that the emotion or tension reads at small size.
3.What are promise, number and curiosity thumbnails?
A promise thumbnail says what the viewer gets, a number thumbnail leads with one striking figure, and a curiosity thumbnail asks a question the video answers. Making all three for one video and comparing them with YouTube Test & Compare is the fastest way to learn.
4.How fast can you deliver?
A Thumbnail Trio is delivered within 24 hours; three directions come for approval the same day with a short note.
