YouTube Thumbnail Viewer
Accessibility
YouTube Thumbnail Viewer
Users
3K
Rating
4.6
Reviews
5
7D Growth
0|0%
Cooling signalNo paid features detectedMedium-risk permissions
Thumbnail Preview - YouTube Thumbnail Testing
Preview and test your thumbnails directly on YouTube
Users757Current public install base
Rating4.9Store average score
Reviews10Public review volume
Manifest versionV3Extension platform version
7-day growth-17Net users gained this week
7-day growth rate-2.21%Relative weekly velocity
Preview
6 assetsThumbnail Preview - YouTube Thumbnail Testing Media preview
Trend
User growth trend
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User Growth Over Time
Rating trend
7-day rating trend
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7-day rating change
Start
4.90
Latest
4.90
7-day rating change
0.00
2026年7月18日2026年7月21日
Growth overview
Daily, weekly, and monthly growth
Compare 1-day, 7-day, and 30-day net growth and growth rate.
1-day growthNo data
----7-day growthDeclining
-17-2.21%30-day growthNo data
----Technical snapshot
Version, languages, and crawl freshness
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Version2.4.1
ManifestV3
Size512KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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Preview your youtube video thumbnail and title directly within your YouTube homepage / search page or video recommendation and grow your channel to new heights.
Let’s get those watch hours up, let’s increase your video virality, let's grow that channel.
As a YouTuber, seeing your upcoming video's thumbnail in context is crucial to knowing if it stands out or blends in with other content.
A good thumbnail is the entry/growth gate of your video. It does not matter how good your video is if users don’t get to see it.
It is said with a good thumbnail preview
● ✅ Bring 30-40% more views to a video
Reviews
Recent review snapshot
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Store average score4.9Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.9Average computed only from synced review bodies below
Reviews with text8Synced review bodies
Total ratings / reviews10Chrome Web Store public rating/review count
Store average score: 4.9. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Review related products from the Chrome Web Store detail page.
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Functionality & UI
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7D Growth
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PrevYou — YouTube Thumbnail Previewer
Social
Preview your video thumbnail and title on YouTube home page or subscription feed.
Users
6K
Rating
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Reviews
50
7D Growth
0|0%
I would rate this a full 5 stars, but it shakes the thumbnail when you add it, and it makes your eye immediately go to it. I wish there was a setting to remove this, but there doesn't seem to be anything. The idea is to see if your thumbnail catches the eye, but by giving it some animation, that by default makes it catch your eye more, regardless of whether it's good or bad. OTHERWISE, this tool is stellar. No daily limits, works in actual yt, and can flip between thumbnails.
Esta es la mejor extension que he encontrado, literalmente ni mrbeast tiene esto en su pagina.
So far so good
every creator needs a toolset that helps us focus on the actual thing we like and do best: making awesome content for our audience. Thumbnail Preview is one of these tools that just makes your uploading routine smoother. It's high on my list.
Mi-a fost de mare ajutor în alegerea unui thumbnail pentru un video de promovare. Mulțumesc!
The new look is amazing, I really like that it integrates directly in YouTube.
As a creator I find this as one of my main go to extension BEFORE uploading to youtube
This is amazing!!!! It helped me a lot to select the best thumbnails for my videos and quickly see how they would actually look before posting the video. This saved me a lot of time and helped me grow my channel.