# tools.stamp.custom

Part of [Tools](https://kernstra.com/docs/web-sdk/config/tools) in the Kernstra Web SDK 1.0.0 configuration reference.

- Type: `{ label: string; url: string }[]`
- Page: https://kernstra.com/docs/web-sdk/config/tools/stamp-custom

Your own stamp images, listed under **Yours** next to the stamps the user makes, at their own proportions and at most 200 pt wide. A `data:` URL whose header claims a raster too large to decode (over 64 million pixels, or a side over 16384 px) is left out with a console warning. A stamp image `url` on another origin needs that origin in `connect-src` or `img-src`.

```ts
tools: { stamp: { builtIn: true, custom: [{ label: 'Logo', url: '/stamps/logo.png' }] } }
```

Web page: https://kernstra.com/docs/web-sdk/config/tools/stamp-custom