# YouTube Thumbnail

> A bold, eye-catching YouTube thumbnail template with a hero image, headline, accent badge, and channel branding.

This is a [Bannx](https://bannx.com) template. Render any of its **pages** to an image (PNG, SVG, WebP) or PDF through the Bannx Render API, and customize the output by passing **tweaks** (variable overrides).

## Template

- Template ID: `youTube-thumbnail`
- Category: social-media
- Pages: 1
- Open in browser: https://bannx.com/templates/youTube-thumbnail

## How to use

1. Pick a **page** below and note its **page ID**.
2. Call the Render API with that page ID. Override text, colors, and other values via the `tweaks` map (keys are the variable names listed below).
3. Authenticate with an API key (create one under **Settings → Space → Developers**) using the `Authorization: Bearer <token>` header. GET requests for this template require a token (or the space GET render secret `gt`).

Full docs: https://bannx.com/docs/rendering · https://bannx.com/docs/variables

## Quick demo (no API key)

AI agents and curious humans can render this **public** template with tweaks without an account. Mint a short-lived **demo token** (IP-throttled, ~1h TTL, max 5 per hour per IP) and pass it as `?demo=...` (or `Authorization: Bearer <token>`):

```bash
# 1. Mint a demo token (no auth required)
curl -s -X POST https://bannx.com/api/demo-token
# → { "token": "demo_…", "expiresAt": …, "quota": { … } }

# 2. Render with the token (public templates only)
curl -L "https://bannx.com/api/render/yhxTe-uDI2rH7WO34z5gp?format=png&output=binary&demo=demo_…" --output demo.png
```

Demo tokens only work on public templates and don't consume any space's credits. For production usage, create an API key under **Settings → Space → Developers** instead.

## Variables

_No configurable variables._

## Pages

### YouTube Thumbnail

- Page ID: `yhxTe-uDI2rH7WO34z5gp`
- Size: 1200×630
- Variables: `heroImage`, `badgeLabel`, `badgeColor`, `headline`, `subheadline`, `channelName`

## Example: render "YouTube Thumbnail"

POST (recommended):

```bash
curl -X POST "https://bannx.com/api/render" -H "Content-Type: application/json" -H "Authorization: Bearer YOUR_API_KEY" --data "{\"templateId\":\"youTube-thumbnail\",\"draft\":false,\"format\":\"png\",\"output\":\"binary\",\"tweaks\":{\"heroImage\":\"https://images.unsplash.com/photo-1511367461989-f85a21fda167?w=1200&q=80\",\"badgeLabel\":\"NEW\",\"badgeColor\":\"#ff0000\"},\"pageId\":\"yhxTe-uDI2rH7WO34z5gp\"}" -o render.png
```

GET (embed in an `<img>` / quick link):

```bash
curl -H "Authorization: Bearer YOUR_API_KEY" "https://bannx.com/api/render/yhxTe-uDI2rH7WO34z5gp?format=png&output=binary&templateId=youTube-thumbnail&tweaks=%7B%22heroImage%22%3A%22https%3A%2F%2Fimages.unsplash.com%2Fphoto-1511367461989-f85a21fda167%3Fw%3D1200%26q%3D80%22%2C%22badgeLabel%22%3A%22NEW%22%2C%22badgeColor%22%3A%22%23ff0000%22%7D" -o render.png
```