What is Thumbnail Test?
Shipping two or more cover images for the same video or page and keeping the one that earns the click.
cover B wins the click
A thumbnail test compares…
Write it in your own words in the app.
In real work
The thumbnail test showed a face-plus-text cover beat the landscape still by a wide margin.
In the illustration
Click pellets fall into each jar; the fuller jar's card stays lit, the other folds down.
Run a thumbnail test in your workspace: two covers for the same video, the click rate after 48 hours, and the one we keep.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
One term a day, a short quiz, and sentence practice that checks your own words.
02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.
Learn the next term tomorrow.
Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews. Then it quizzes you until the word sticks. One term a day on iPhone.
