Stumbnail

From $5/mo

What the maker publishes

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. source

Editing

Users can adjust colors, personas, text, and layout without starting over. source

Founded

2024 source

Free tier

Stumbnail says it discontinued its free tier and no longer provides free credits. source

Free tools

Stumbnail offers a free thumbnail previewer and downloader; the downloader page says no signup is needed and downloads have no limits. source

Generation

The pricing page says thumbnails can be generated from a prompt or YouTube link, and generation costs 3–47 credits depending on model. source

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. source

Payment availability

The pricing page says it has temporarily stopped accepting new payments and purchases are unavailable. source

Plan features

Every paid plan includes prompt-based generation, Smart Merge, thumbnail cloning, custom asset uploads, access to all AI models, and private thumbnails. source

Privacy

The privacy policy says Stumbnail does not sell personal information and does not store full credit card details; payments are processed by Stripe. source

Product

Stumbnail describes itself as an AI YouTube thumbnail generator that turns ideas or video titles into creator-ready visuals. source

Retention

The privacy policy says thumbnails and related data are retained for up to 365 days and may then be deleted. source

Security

The privacy policy lists TLS/SSL encryption in transit, encrypted storage at rest, access controls and authentication, and regular security audits and updates. source

Smart Merge

Smart Merge combines uploaded images and lets AI compose a thumbnail with layouts, text, and style. source

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. source

Checked against the maker's pages on 9 Oct 2026.