Thumbn
The facts below are what the maker publishes about Thumbn, checked and dated. Our editors have not written about it yet.
Plans and prices
From Thumbn's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free preview | Free | one watermarked cover per day without an account · free account removes watermark and allows actual Reel uploads, variants and chat refinement |
| Pro | $19 a month | 60 credits/month · both image models · no watermark · 4 concepts/run · full agent studio · monthly |
| Studio | $49 a month | 175 credits/month · everything in Pro · highest monthly allowance · non-expiring credit packs · priority rendering · monthly |
The facts
Each one read from Thumbn's own pages, with the date it was checked.
What it does
- Account requirement
- Sign-in uses a Google account rather than a separate Thumbn password.checked 15 Oct 2026
- Account security
- Thumbn says user API keys are encrypted at rest and are not shown in the browser after saving.checked 8 Oct 2026
- API tools
- Documented tools include create_thumbnail, get_thumbnail_job, list_thumbnail_jobs, list_image_models, estimate_cost and get_account.checked 15 Oct 2026
- Authentication
- API requests use an x-api-key or bearer token, while MCP uses OAuth 2.1 with authorization-code PKCE and refresh tokens.checked 15 Oct 2026
- Automatic grading
- Each render is scored against a style rubric and re-edited until it clears the stated threshold.checked 15 Oct 2026
- Availability limitation
- The terms provide no uptime guarantee and warn that failures or policy changes at third-party AI providers can disable parts of the service.checked 15 Oct 2026
- Bring your own keys
- Renders using a user's Google, OpenAI, or Anthropic key bill to that provider account instead of using Thumbn credits.checked 8 Oct 2026
- Cancellation
- Subscriptions can be cancelled from the account billing page at any time, with access continuing through the paid period.checked 8 Oct 2026
- Cancellation and refunds
- Subscriptions can be cancelled from the billing page; unused prepaid periods are not prorated, and refunds are offered within 14 days only when no generation has been made unless the service caused the problem.checked 15 Oct 2026
- Chrome Web Store availability
- The opened Chrome Web Store help page explains the store generally, but no Thumbn extension or rating is shown there.checked 15 Oct 2026
- Conversational editing
- Users can select a generated thumbnail and describe edits such as larger text, a different background or an arrow in plain language.checked 15 Oct 2026
- Credit calculation
- Video analysis costs 2 credits per job; rendered images cost model-specific rates such as 1 credit for Nano Banana Pro and 2 for GPT Image 2.checked 15 Oct 2026
- Data deletion
- After account closure, projects, uploads and generated images are stated to be deleted within 30 days, while invoices are retained for six years for tax purposes.checked 15 Oct 2026
- Editing
- Users can direct edits to a selected thumbnail, and each version is kept rather than overwriting the previous one.checked 8 Oct 2026
- Export
- Generated versions are downloadable as PNG files.checked 15 Oct 2026
- Independent discussion
- A LinkedIn post associated with Thumbn emphasizes matching thumbnail concepts to video type and warns that misleading thumbnails can hurt viewer retention and trust.checked 15 Oct 2026
- Independent discussion: design guidance
- The same LinkedIn page recommends one dominant subject, strong contrast, a single emotional moment and alignment between title and thumbnail.checked 15 Oct 2026
- Integrations
- Thumbn supports bringing Google, OpenAI or Anthropic API keys for rendering billed directly by those providers.checked 15 Oct 2026
- MCP clients
- The developer page documents connections for Claude, Codex, Cursor and other Streamable HTTP MCP clients.checked 15 Oct 2026
- MCP server
- Thumbn provides a Streamable HTTP MCP endpoint at https://api.thumbn.so/mcp.checked 15 Oct 2026
Money
- API billing
- API, MCP and web generations share the same subscription and credit balance, with no separate free API tier.checked 15 Oct 2026
Where it runs
- App-store availability
- No iOS, Android or Microsoft Store application listing or rating is stated on the opened Thumbn pages; the product is presented as a web service.checked 15 Oct 2026
- Cross-platform rendering
- One run can produce both a 16:9 YouTube image and a 9:16 image for TikTok and Instagram Reels.checked 15 Oct 2026
The company
- Maker location
- The terms say the service is operated from the United Kingdom and provide no registered legal name on the page.checked 15 Oct 2026
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