Umbraco

Provider documentation

Umbraco

Generate ImageSharp query commands for Umbraco media assets.

Setup

Install the framework package and the core package for the provider import:

npm install @desource/image @desource/image-svelte

Save this as image.config.ts beside your example component. Replace sample domains and identifiers with your own.

import type { ImageConfig } from '@desource/image';
import { umbracoProvider } from '@desource/image/providers/umbraco';

export const imageConfig = {
  provider: 'umbraco',
  providers: {
    umbraco: umbracoProvider({
      "baseURL": "https://cms.example.com"
    })
  }
} satisfies ImageConfig;

Registering this provider makes it the default for the configured components. To mix services, register each provider and set provider="umbraco" on the image that should use this one.

Image source

Use the complete /media/... path.

/media/asset-id/photo.jpg

Usage

The example uses the shared configuration above and the Svelte image component.

<script lang="ts">
  import { Image, setImageConfig } from '@desource/image-svelte';
  import { imageConfig } from './image.config';

  setImageConfig(imageConfig);
</script>

<Image
  src="/media/asset-id/photo.jpg"
  alt="Sample image" width={800} height={500}
  modifiers={{
  "quality": 80,
  "format": "webp",
  "fit": "cover",
  "focalPointXY": "0.55,0.58"
}}
/>

Provider options

baseURL
Your Umbraco site origin. Defaults to an empty prefix.

Pass shared defaults such as screens, domains, aliases and presets to the image configuration. Pass provider-specific defaults as modifiers in the provider factory.

Modifiers

Supports width, height, format, quality, fit, sampler, anchorPosition and focalPointXY. Fit contain becomes max; cover becomes crop. A focal point is an x,y pair between 0 and 1.

Set dimensions on the component and pass service-specific operations through modifiers, as shown above. See the provider source for exact mappings and the service documentation for accepted values.

Provider notes

  • Set crops are not implemented. The adapter does not generate HMAC signatures for protected imaging endpoints.
  • Umbraco imaging configuration can cap allowed resize dimensions.
  • Use sampler for ImageSharp resampling and anchorPosition for an edge or corner crop anchor.
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