Overview
Preview your Thumblr thumbnails directly on YouTube
Thumblr Extension - Preview Your Thumbnails on YouTube See exactly how your thumbnails will look on YouTube before publishing. Thumblr lets you preview AI-generated thumbnails directly in the YouTube interface. HOW IT WORKS: 1. Generate thumbnails on thumblr.io 2. Open the extension on YouTube 3. Drag & drop thumbnails onto the YouTube homepage 4. See your thumbnail displayed as a real video card KEY FEATURES: • Realistic Preview - Your thumbnail appears as a native YouTube video card with title, channel name, views, and duration • Drag & Drop - Simply drag thumbnails from the extension and drop them anywhere on YouTube's video grid • Hide UI Mode - Toggle off the Thumblr badge to see exactly how your thumbnail looks without any overlay • Screenshot - Capture the YouTube page with your thumbnail inserted to share or compare designs • Seamless Integration - Works on YouTube homepage and subscription feeds REQUIREMENTS: - A Thumblr account (thumblr.io) - Generated thumbnails in your Thumblr library Perfect for YouTubers, content creators, and marketers who want to A/B test their thumbnail designs before publishing. Made with ❤️ by Thumblr
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Details
- Version1.0.0
- UpdatedDecember 3, 2025
- Size71.35KiB
- LanguagesEnglish (United States)
- DeveloperWebsite
Email
support@thumblr.io - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Thumblr - YouTube Thumbnail Preview has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Thumblr - YouTube Thumbnail Preview handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site