Freedom251 › AI Thumbnail Generators
Stumbnail
What Stumbnail is
Stumbnail is a web-based AI tool for creating YouTube thumbnails from an idea, video title, prompt, or YouTube link. Users can adjust colors, personas, text, and layout without starting over. Smart Merge combines uploaded images and lets AI compose a thumbnail with a layout, text, and style. The home page describes output at 1280 × 720 pixels in a 16:9 aspect ratio; the About page also describes output up to 4K. Paid plans include prompt-based generation, Smart Merge, thumbnail cloning, custom asset uploads, access to all AI models, and private thumbnails. A generation uses 3–47 credits depending on the model. Starter costs $5 a month and includes 590 credits; Creator costs $9.99 a month and includes 1,475 credits. Stumbnail has discontinued its free tier and free credits, and new purchases are temporarily unavailable. Its site also offers a free thumbnail previewer and downloader: downloading requires no signup and has no limits. The product was founded in 2024.
Who it suits
Stumbnail suits YouTube creators seeking to generate and revise thumbnails from prompts, video links, or uploaded images. Its free previewer and downloader may also suit people who only need those utilities.
What it does well
- Generate thumbnails from prompts or YouTube links
- Smart Merge composes uploaded images
- Paid plans include thumbnail cloning
- Free downloader requires no signup
- Download limits are not imposed
What to know first
- No free plan or free credits
- New purchases are temporarily unavailable
- Generation costs vary from 3–47 credits
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Starter | $5/month; approximately $1/wk; 590 credits/mo · 590 credits/mo · 3–47 credits per generation, depending on AI model · New purchases temporarily unavailable | $5 a month |
| Creator | $9.99/month; approximately $2.3/wk; 1,475 credits/mo · 1,475 credits/mo · 3–47 credits per generation, depending on AI model · New purchases temporarily unavailable | $9.99 a month |
As stumbnail.com lists them, read 9 Oct 2026. The maker's own page has the final word.
Verdict
Stumbnail offers prompt-based thumbnail creation and editing, with paid plans that bundle its generation tools. New paid purchases are temporarily unavailable, though its free previewer and downloader remain listed.
Facts from Stumbnail's own pages
- AI providers
- The privacy policy names Google Imagen and Recraft AI among the third-party AI services and says prompts may be processed by those providers. · stumbnail.com, 9 Oct 2026
- Editing
- Users can adjust colors, personas, text, and layout without starting over. · stumbnail.com, 9 Oct 2026
- Founded
- 2024 · stumbnail.com, 28 Sept 2026
- Free tier
- Stumbnail says it discontinued its free tier and no longer provides free credits. · stumbnail.com, 9 Oct 2026
- Free tools
- Stumbnail offers a free thumbnail previewer and downloader; the downloader page says no signup is needed and downloads have no limits. · stumbnail.com, 9 Oct 2026
- Generation
- The pricing page says thumbnails can be generated from a prompt or YouTube link, and generation costs 3–47 credits depending on model. · stumbnail.com, 9 Oct 2026
- Output
- The home page says generated thumbnails follow 1280 × 720 pixels at a 16:9 aspect ratio; the About page also describes output up to 4K. · stumbnail.com, 9 Oct 2026
- Payment availability
- The pricing page says it has temporarily stopped accepting new payments and purchases are unavailable. · stumbnail.com, 9 Oct 2026
- Plan features
- Every paid plan includes prompt-based generation, Smart Merge, thumbnail cloning, custom asset uploads, access to all AI models, and private thumbnails. · stumbnail.com, 9 Oct 2026
- Privacy
- The privacy policy says Stumbnail does not sell personal information and does not store full credit card details; payments are processed by Stripe. · stumbnail.com, 9 Oct 2026
- Product
- Stumbnail describes itself as an AI YouTube thumbnail generator that turns ideas or video titles into creator-ready visuals. · stumbnail.com, 9 Oct 2026
- Retention
- The privacy policy says thumbnails and related data are retained for up to 365 days and may then be deleted. · stumbnail.com, 9 Oct 2026
- Security
- The privacy policy lists TLS/SSL encryption in transit, encrypted storage at rest, access controls and authentication, and regular security audits and updates. · stumbnail.com, 9 Oct 2026
- Smart Merge
- Smart Merge combines uploaded images and lets AI compose a thumbnail with layouts, text, and style. · stumbnail.com, 9 Oct 2026
- Support
- The contact page lists email support, says replies usually arrive within a few hours, and describes WhatsApp as the fastest contact method with 24/7 availability for urgent issues. · stumbnail.com, 9 Oct 2026
Where Stumbnail stands on Freedom251
- AI Thumbnail Generators#26 of 29