Thumbnail Text Checker
Thumbnail text is read in under a second at the size of a postage stamp. Check that yours survives the feed — score updates as you type.
Why these checks
The checker scores the things that decide whether thumbnail text works at real feed size: word count (1–3 ideal), character length (under ~14 renders big), one charged "punch" word, a number or question mark as a visual pattern-break, and — if you paste your title — whether the text adds new information or just repeats it. It runs entirely in your browser.
Frequently asked questions
How many words should a YouTube thumbnail have?
1–3 words is ideal, 4 is the practical maximum. Thumbnails are mostly seen at small sizes on phones, and viewers decide in well under a second — text that needs reading time never gets it.
Should thumbnail text repeat the video title?
No. The title and thumbnail are read together as one combined hook, so duplicated words waste half of it. The thumbnail should add something the title doesn’t say: a reaction, a stake, a question, or a number.
Does every thumbnail need text?
No — a strong face reaction or a clear visual subject can outperform text. But when you do use text, fewer and larger words beat more and smaller ones every time.
Making the thumbnail itself?
Design tools and CTR analytics that pair with this checker.
Canva Pro →vidIQ →Affiliate links — we may earn a commission at no cost to you.
More free tools