Tools
Stable signalUnknownMedium-risk permissions
YouTube Thumbnail Preview icon

YouTube Thumbnail Preview

Preview your custom thumbnails directly on YouTube before uploading. See how it will look live. Free tool by mivibzzz.com

Users53Current public install base
Rating5.0Store average score
Reviews2Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

YouTube Thumbnail Preview Media preview

3 assets
Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

53535353532026年7月13日2026年7月19日2026年7月19日Latest: 53
Rating trend

7-day rating trend

View collected rating snapshots from the latest 7-day window to assess rating stability.

7-day rating change

Start
5.00
Latest
5.00
7-day rating change
0.00
4.904.955.005.055.102026年7月13日2026年7月19日2026年7月19日Latest: 5.00
2026年7月13日2026年7月19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
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7-day growthFlat
00%
30-day growthNo data
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Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version2.0.0
ManifestV3
Size56.23KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

Test your Thumbnails in Real Time directly on YouTube!

Step 1 - Upload your Thubnail to the extension.

Step 2 - Add your Title & Chanel Name!

Step 3 - Click "Apply Preview" to see your Thumbnail as it will look on YouTube!

You can reset the Extension and Try Multiple Thumbnails!

You can try different titles!

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average5.0Average computed only from synced review bodies below
Reviews with text1Synced review bodies
Total ratings / reviews2Chrome Web Store public rating/review count

Store average score: 5.0. 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.

5★
1
4★
0
3★
0
2★
0
1★
0
Caleb Thompson2026年4月20日
5

Super useful to test your thumbnails before you upload them to your videos

Version 2.0.0Language en
Related products

Similar and related extensions

Review related products from the Chrome Web Store detail page.