Free Thumbnail Tester

YouTube Title Length Checker

YouTube truncates long titles in search results. Check exactly how your title appears alongside your thumbnail before publishing.

YouTube Thumbnail Preview is a free YouTube optimization tool by Kubes that previews how YouTube thumbnails appear in search results and suggested videos before publishing. Thumbnails are responsible for 90% of a video's click-through rate.

CTR Optimization Data

90%

CTR determined by thumbnail

2-10%

Average YouTube CTR

1280x720

Optimal thumbnail size

Settings

Drop image or click to upload

16:9 recommended

Y
10:34
Y

Your Amazing Video Title That Might Be Too Long

Your Channel

1.2M views2 days ago

Thumbnail
10:30
R

Deepinder Goyal: Zomato, 10-Min Delivery, Founder Mindset & Business In India | FO453 Raj Shamani

Raj Shamani

2.8M views3 weeks ago

Thumbnail
15:44
R

Bill Gates on India, Billion-Dollar Business Opportunities, PM Modi & Children | FO335 Raj Shamani

Raj Shamani

4.1M views2 months ago

Timestamp Check: Make sure your important text isn't covered by the 10:34 badge in the bottom-right corner!

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Feature Comparison

FeatureKubesTubeBuddyVidIQ
PriceFree$9/mo$7.50/mo
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Mobile Preview
Dark/Light Mode
No Signup Required

How to Use the YouTube Thumbnail Previewer

  1. 1

    Upload your thumbnail image.

  2. 2

    Enter your video title.

  3. 3

    Preview in different contexts (search, suggested, mobile).

  4. 4

    Compare multiple thumbnail options.

  5. 5

    Choose the best performing visual.

Why Thumbnails Determine Click-Through Rate

Your thumbnail is responsible for 90% of a video's click-through rate. A thumbnail that stands out in search results can double or triple your views without changing anything else.

Frequently Asked Questions

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