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What our analysis found
ThumbnailTest is not yet reviewed by Extension Auditor. It comes from a publisher with 4 extensions and was last updated in July 2026.
ThumbnailTest Chrome extension security report
ID: dhgkilpkflogmmlalkejhgldendcbfjf
Supported Languages
Extension Info & Metadata
Publisher Contextual Analysis
- Author
- fullkycchecks
- Privacy
- Privacy Policy
- Help
- Help Center
- Country
- NL
- MX records exist
- Yes
- Domain exists
- Yes
- Is disposable
- No
- Is role-based
- Yes
- Mailbox exists
- Yes
- Address
- Linnaeuslaan 26 Veenendaal 3903 GS NL
- Website
- Visit
Screenshots & videos
Install growth
About this extension
Vergelijk twee thumbnails in een nagebootste YouTube-interface: zoekresultaten, aanbevolen en mobiel. Alles lokaal in je browser.
Read the publisher’s full description
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
User reviews
Extension files
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