- Home
- AI Thumbnail Generators
- Thumbrix
Thumbrix
What it is
Thumbrix helps video creators turn a concept into a thumbnail from a description, an optional JPG or PNG photo, and a short headline. Users can describe a video or paste its YouTube link, choose or write a headline, then generate and download one 16:9 image. The homepage says generation takes about two minutes and full-size originals download without a watermark. AI thumbnail planning suggests headline ideas and scene directions for free, with or without an account. Other listed tools include AI Edit, a thumbnail tester, Minecraft and Roblox thumbnail creators, an Outlier Finder, and a thumbnail downloader. The tester scores mobile readability, subject clarity, text readability, contrast and color, composition, and technical quality, but its score is not actual CTR. Thumbrix runs on the web and as an extension. The free account lists 20 credits, while the About page and Terms describe five free generations, creating a conflict. Paid choices include a 60-credit pack for $2.99, paid once and monthly Creator and Pro plans.
For and against
For
- Accepts descriptions, links, headlines, and reference photos
- Full-size downloads have no watermark
- Free AI thumbnail planning
- Includes readability and composition scoring
- Web and extension access
Against
- Free-credit allowance is described inconsistently
- Each request creates one 16:9 image
- Extension is only a website launcher
The verdict
Thumbrix offers thumbnail generation, planning, and related creator tools with a free option. Check the stated credit allowance before relying on the free tier, since its pages disagree.
Who it suits
Thumbrix suits YouTube and YouTube Shorts creators who need generated thumbnails, planning suggestions, or thumbnail checks. It is also useful for creators choosing between one-time credit packs and monthly credit plans.
Plans and prices
Free account
20 credits on sign-up · AI planning · saved projects · no-watermark downloads
Read 9 Oct 2026 · thumbrix.com
60-credit pack
60 credits · 1080p images · one image at a time · credits last one year
Read 9 Oct 2026 · thumbrix.com
Creator
250 credits a month · 2K and 4K output · 2–4 versions at once · credits roll over for 90 days
Read 9 Oct 2026 · thumbrix.com
300-credit pack
300 credits · 1080p images · one image at a time · credits last one year
Read 9 Oct 2026 · thumbrix.com
Pro
600 credits a month · 2K and 4K output · 2–4 versions at once · credits roll over for 90 days
Read 9 Oct 2026 · thumbrix.com
600-credit pack
600 credits · 1080p images · one image at a time · credits last one year
Read 9 Oct 2026 · thumbrix.com
On the record
- Credit limits
- The pricing page says new accounts get 20 credits, while the About page and Terms describe five free image generations in total; these pages conflict on the free allowance.thumbrix.com · read 9 Oct 2026
- Data handling
- Thumbnail descriptions and optional reference photos are sent to KIE for image generation, and generated images and task records are saved so users can return to results.thumbrix.com · read 9 Oct 2026
- Extension
- The Terms describe the current browser extension version 0.1.1 as a website launcher only that no longer reads YouTube pages or inserts statistics panels.thumbrix.com · read 9 Oct 2026
- Generation
- The generator creates one 16:9 image per request and accepts JPG or PNG reference photos.thumbrix.com · read 9 Oct 2026
- Image output
- The homepage says generation takes about two minutes and users can download the full-size original without a watermark.thumbrix.com · read 9 Oct 2026
- Integrations
- The privacy policy says Thumbrix uses Cloudflare, KIE for image generation, checkout providers Stripe, PayPal or Creem, optional Google or GitHub sign-in, and Resend transactional email when configured.thumbrix.com · read 9 Oct 2026
- Minecraft privacy
- New Minecraft generations are public by default and may be shown with their prompt in a curated gallery; eligible paid users can select private before submitting.thumbrix.com · read 9 Oct 2026
- Operator
- The Terms say Thumbrix is operated by an individual based in mainland China.thumbrix.com · read 9 Oct 2026
- Planning
- AI thumbnail planning suggests headline options and scene directions and is free, with or without an account.thumbrix.com · read 9 Oct 2026
- Product
- Thumbrix helps video creators turn an idea into a thumbnail by combining a description, optional photo, and short headline.thumbrix.com · read 9 Oct 2026
- Security
- The privacy policy says API keys are stored as SHA-256 digests after being shown once, and complete card details are handled by the payment provider rather than stored in the application database.thumbrix.com · read 9 Oct 2026
- Support
- Thumbrix lists [email protected] for service, billing, rights, or account questions.thumbrix.com · read 9 Oct 2026
- Testing
- The thumbnail tester scores mobile readability, subject clarity, text readability, contrast and color, composition, and technical quality; it says the score is not actual CTR.thumbrix.com · read 9 Oct 2026
- Tools
- Thumbrix also lists AI Edit, a thumbnail tester, Minecraft and Roblox thumbnail creators, an Outlier Finder, and a thumbnail downloader.thumbrix.com · read 9 Oct 2026
- Workflow
- Users can describe a video or paste its YouTube link, choose or write a headline, then generate and download an image.thumbrix.com · read 9 Oct 2026
