Examples of CDN providers configuration.

Cloudinary

https://cloudinary.com

assets:
  images:
    cdn:
      enabled: true
      account: 'xxxx'
      url: 'https://res.cloudinary.com/%account%/image/fetch/c_limit,w_%width%,q_%quality%,f_%format%,d_default/%image_url%'

Cloudimage

https://www.cloudimage.io

assets:
  images:
    cdn:
      enabled: true
      account: 'xxxx'
      url: 'https://%account%.cloudimg.io/%image_url%?w=%width%&q=%quality%&force_format=%format%'

TwicPics

https://www.twicpics.com

assets:
  images:
    cdn:
      enabled: true
      account: 'xxxx'
      canonical: false
      remote: false
      url: 'https://%account%.twic.pics/%image_url%?twic=v1/resize=%width%/quality=%quality%/output=%format%'

Source URL: Your website baseurl.

imgix

https://imgix.com

assets:
  images:
    cdn:
      enabled: true
      account: 'xxxx'
      canonical: false
      remote: false
      url: 'https://%account%.imgix.net/%image_url%?w=%width%&q=%quality%&fm=%format%'

Base URL: Your website baseurl.

Netlify Image CDN

https://docs.netlify.com/image-cdn/overview/

assets:
  images:
    cdn:
      enabled: true
      canonical: false
      url: '/.netlify/images?url=%image_url%&w=%width%&fm=%format%'

Run locally

Setup Netlify CLI

npm install netlify-cli -g
netlify link

netlify.toml:

[dev]
  targetPort = 8000

Run local server

php cecil.phar serve & netlify dev

Open http://localhost:8888

image_srcset

Builds the HTML img srcset (responsive) attribute of an image Asset.

{{ image_srcset(asset) }}

Examples:

{% set asset = asset(image_path) %}
<img src="{{ url(asset) }}" width="{{ asset.width }}" height="{{ asset.height }}" alt="" class="asset" srcset="{{ image_srcset(asset) }}" sizes="{{ image_sizes('asset') }}">

image_sizes

Returns the HTML img sizes attribute based on a CSS class name.
It should be use in conjunction with the image_srcset function.

{{ image_sizes('class') }}

Examples:

{% set asset = asset(image_path) %}
<img src="{{ url(asset) }}" width="{{ asset.width }}" height="{{ asset.height }}" alt="" class="asset" srcset="{{ image_srcset(asset) }}" sizes="{{ image_sizes('asset') }}">

image_from_website

Builds the HTML img element from a website URL by extracting its illustration image. Returns null if no image is found.

{{ image_from_website('url', {attributes}, {options}) }}

The image is searched in the page HTML with the following fallbacks, the first candidate that can be downloaded as an image is used:

1. Open Graph: og:image:secure_url, og:image, og:image:url
2. Twitter: twitter:image, twitter:image:src
3. <link rel="image_src">
4. Microdata: itemprop="image"
5. JSON-LD: image property
6. First <img> of <article>, <main> or <body>
7. <link rel="apple-touch-icon">
8. <link rel="icon">

Relative URLs are resolved against <base href> or the page URL.

The resolved image URL and the downloaded image are cached (see cache.assets.remote.ttl).

Options:

• fallback: image path (or URL) used if no image is found
• other image options (e.g.: responsive, formats)

Examples:

{{ image_from_website('https://example.com/page-with-image.html') }}

{# with a fallback image #}
{{ image_from_website('https://example.com/', {alt: 'Illustration'}, {fallback: 'images/default.png'}) }}

resize

Resizes an image to a specified width (in pixels) or/and height (in pixels).

• If only the width is specified, the height is calculated to preserve the aspect ratio
• If only the height is specified, the width is calculated to preserve the aspect ratio
• If both width and height are specified, the image is resized to fit within the given dimensions, image is cropped and centered if necessary
• If remove_animation is true, any animation in the image (e.g., GIF) will be removed

{{ asset(image_path)|resize(width: width, height: height, remove_animation: bool) }}

Examples:

{{ asset(page.image)|resize(300) }}
{# equivalent to: #}
{{ asset(page.image)|resize(width: 300) }}
{# resizes to 300px width, height auto-calculated to preserve aspect ratio #}
{{ asset(page.image)|resize(height: 200) }}
{# resizes to 300px width and 200px height, and crops if necessary #}
{{ asset(page.image)|resize(300, 200) }}
{# removes any animation from the image #}
{{ asset(page.image)|resize(width: 1200, height: 630, remove_animation: true) }}

cover

Resizes an image to a specified width and height, cropping it if necessary.

{{ asset(image_path)|cover(width, height) }}

Example:

{{ asset(page.image)|cover(1200, 630) }}

maskable

Adds padding, in pourcentages, to an image to make it maskable.

{{ asset(image_path)|maskable(padding) }}

Example:

{{ asset('icon.png')|maskable }}

webp

Converts an image to WebP format.

Example:

<picture>
    <source type="image/webp" srcset="{{ asset(image_path)|webp }}">
    <img src="{{ url(asset(image_path)) }}" width="{{ asset(image_path).width }}" height="{{ asset(image_path).height }}" alt="">
</picture>

avif

Converts an image to AVIF format.

Example:

<picture>
    <source type="image/avif" srcset="{{ asset(image_path)|avif }}">
    <img src="{{ url(asset(image_path)) }}" width="{{ asset(image_path).width }}" height="{{ asset(image_path).height }}" alt="">
</picture>

lqip

Returns a Low Quality Image Placeholder (100x100 px, 50% blurred) as data URL.

{{ asset(image_path)|lqip }}

dominant_color

Returns the dominant hexadecimal color of an image.

{{ asset(image_path)|dominant_color }}

fingerprint

Add the file content finger print to the file name.

{{ asset(path)|fingerprint }}
{{ path|fingerprint }}

Examples:

{{ asset('styles.css')|fingerprint }}

minify

Minifying a CSS or a JavaScript file.

{{ asset(path)|minify }}

Examples:

{{ asset('styles.css')|minify }}
{{ asset('scripts.js')|minify }}

minify_css

Minifying a CSS string.

{{ variable|minify_css }}

{% apply minify_css %}
{# CSS here #}
{% endapply %}

Examples:

{% set styles = 'some CSS here' %}
{{ styles|minify_css }}

<style>
{% apply minify_css %}
  html {
    background-color: #fcfcfc;
    color: #444;
  }
{% endapply %}
</style>

minify_js

Minifying a JavaScript string.

{{ variable|minify_js }}

{% apply minify_js %}
{# JavaScript here #}
{% endapply %}

Examples:

{% set script = 'some JavaScript here' %}
{{ script|minify_js }}

<script>
{% apply minify_js %}
  var test = 'test';
  console.log(test);
{% endapply %}
</script>

scss_to_css

Compiles a Sass string to CSS.

{{ variable|scss_to_css }}

{% apply scss_to_css %}
{# SCSS here #}
{% endapply %}

Alias: sass_to_css.

Examples:

{% set scss = 'some SCSS here' %}
{{ scss|scss_to_css }}

<style>
{% apply scss_to_css %}
  $color: #fcfcfc;
  div {
    color: lighten($color, 20%);
  }
{% endapply %}
</style>

to_css

Compiles a Sass file to CSS.

{{ asset(path)|to_css }}
{{ path|to_css }}

Examples:

{{ asset('styles.scss')|to_css }}

inline

Outputs the content of an Asset.

{{ asset(path)|inline }}

Example:

{{ asset('styles.css')|inline }}

dataurl

Returns the data URL of an asset.

{{ asset(path)|dataurl }}
{{ asset(image_path)|dataurl }}