ThumbnailTest

Unknown author · Tools

Open in Chrome Web Store

Users

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Avg rating

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Ratings

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Updated

Jul 2, 2026

Media

2 items

Description

Vergelijk twee thumbnails in een nagebootste YouTube-interface: zoekresultaten, aanbevolen en mobiel. Alles lokaal in je browser. ThumbnailTest lets you compare two YouTube thumbnails in a realistic YouTube interface — search results, recommended videos, and mobile view. Upload Version A and Version B, enter a video title, and instantly see which thumbnail stands out in a real context. Everything runs locally in your browser. No uploads, no account, no backend required. Perfect for YouTubers who want to know which thumbnail performs better before publishing. Features: - Upload two thumbnails and compare them alongside real YouTube-style content - Three view modes: search results, recommended, and mobile - A/B labels visible in the preview - 100% local, no data is sent anywhere

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
13
Description length
Characters in the listing description.
791
Media assets
Screenshots and videos on the listing.
2
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
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Keyword in description
Case-insensitive substring match in the description.
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Keyword occurrences in description
Count of case-insensitive occurrences in the description.
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Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
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These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.