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ImageKit transformer for Imager X

A plugin for using ImageKit as a transformer in Imager X.
Also, an example of how to make a custom transformer for Imager X.

Requirements

This plugin requires Craft CMS 5.0.0-beta.1 or later, Imager X 5.0.0-beta.1 or later, and an account at ImageKit.

Usage

Install and configure this transformer as described below. Then, in your Imager X config, set the transformer to imagekit, ie:

'transformer' => 'imagekit',

Transforms are now by default transformed with ImageKit, test your configuration with a simple transform like this:

{% set transform = craft.imagerx.transformImage(asset, { width: 600 }) %}
<img src="{{ transform.url }}" width="600">
<p>URL is: {{ transform.url }}</p>

If this doesn't work, make sure you've configured a defaultProfile, have a profile with the correct name, and that ImageKit is configured correctly.

Cave-ats, shortcomings, and tips

This transformer only supports a subset of what Imager X can do when using the default craft transformer. All the basic transform parameters are supported, with the following exceptions:

  • Focal points are translated to focus anchor points (ie top, left, center, etc).
    – Watermarks are not translated automatically from Imager syntax to ImageKit's, but you can still add watermarks by manually passing them through the transformerParams object (see below).
  • No effects are currently converted automatically.

To pass additional options directly to ImageKit, you can use the transformerParams transform parameter and pass them in using an options object. Example:

{% set transforms = craft.imagerx.transformImage(asset, 
    [{width: 400}, {width: 600}, {width: 800}], 
    { ratio: 2/1, transformerParams: { rotation: 45 } }
) %}

Refer to the ImageKit PHP SDK for parameters to use, and the ImageKit documentation for more information.

Installation

To install the plugin, follow these instructions:

  1. Install with composer via composer require spacecatninja/imager-x-imagekit-transformer from your project directory.
  2. Install the plugin in the Craft Control Panel under Settings > Plugins, or from the command line via ./craft plugin/install imager-x-imagekit-transformer.

Configuration

You can configure the transformer by creating a file in your config folder called imager-x-imagekit-transformer.php, and override settings as needed.

publicKey [string]

Default: ''
Public key for your ImageKit account (Developer Options > API Keys, in ImageKit).

privateKey [string]

Default: ''
Private key for your ImageKit account (Developer Options > API Keys, in ImageKit).

signUrls [bool]

Default: false
Toggle this on to generate signed URLs. This is required if "Restrict unsigned image URLs" in Settings > Images > Security is turned on.

signedUrlsExpireSeconds [int]

Default: 31536000 (one year)
Duration for signed URLs.

stripUrlQueryString [bool]

Default: true
By default all query strings are stripped from full URLs passed to ImageKit, to improve caching. If you use full URLs that rely on query strings, you can toggle this off to make them work.

profiles [array]

Default: []
Profiles are usually a one-to-one mapping to the URL endpoints you've created in ImageKit. But due to the nature of ImageKit URL endpoints, where you can mix different storages per endpoint, it could also make sense to create several profiles for one endpoint for different use-cases (ie, one to use as a web proxy and the other for relative paths). You set the default profile to use using the defaultProfile config setting, and can override it at the template level by setting profile in your transformerConfig.

Example profile:

'profiles' => [
    'default' => [
        'urlEndpoint' => 'https://ik.imagekit.io/myurlendpoint',
        'isWebProxy' => false,
        'useCloudSourcePath' => true,
    ],
    'proxy' => [
        'urlEndpoint' => 'https://ik.imagekit.io/myotherurlendpoint',
        'isWebProxy' => true
    ]
],

Each profile has the following settings:

urlEndpoint [string]

Default: ''
This is the URL endpoint you created in ImageKit.

isWebProxy [bool]

Default: false
Indicates if the URL endpoint uses a web proxy or not. If enabled, full URLs will be passed to ImageKit, instead of the relative path to the asset.

defaultParams [array]

Default: []
Default params to be passed to every transform.

useCloudSourcePath [bool]

Default: false
If enabled, Imager will prepend the Craft file system path to the asset path, before adding it to the ImageKit URL. This makes it possible to have one ImageKit source pulling images from many Craft file systems when they are for instance on the same S3 bucket, but in different subfolder. This only works on file systems that implements a path setting (AWS S3 and GCS does, local volumes does not).

addPath [string|array]

Default: []
Prepends a path to the asset's path. Can be useful if you have several volumes that you want to serve with one ImageKit source. If this setting is an array, the key should be the volume handle, and the value the path to add.

defaultProfile [string]

Default: ''
Sets the default profile to use (see profiles). You can override profile at the transform level by setting it through the transformParams transform parameter. Example:

{% set transforms = craft.imagerx.transformImage(asset, 
    [{width: 800}, {width: 2000}], 
    { transformerParams: { profile: 'myotherprofile' } }
) %}

defaultParams [array]

Default: []
Default params to pass to all transforms.

purgeEnabled [bool]

Default: true
Toggles automatic purging on/off.

Price, license and support

The plugin is released under the MIT license. It requires Imager X, which is a commercial plugin available in the Craft plugin store. If you need help, or found a bug, please post an issue in this repo, or in Imager X' repo (preferably).

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ImageKit transformer for Imager X

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