WordPress Image Resize

WordPress can be difficult to work with when using images. Especially if you want to have multiple image sizes available for templates, the result is either putting the resizing responsibility on end users or having an extremely large uploads directory.

This plugin aims to solve this issue, simply and without any additional libraries. It will automatically add your custom sizes to the Attachment meta data which means on deletion, all of the arbitrary sizes will be removed as well.

Installation

If you are using roots/bedrock or a variant of this, the installation is simply to run composer require redfinch/redfinch-image-resize.

To install manually go to the releases page and download the latest version. Unzip the file into your WordPress plugins directory.

Using the plugin

The plugin is aimed at developers and therefore there is no admin interface. The plugin exposes four main functions:

redfinch_resize_image

This resizes an image proportionally to fit X and Y values.

<img src="<?php echo redfinch_resize_image($attachment_id, 320, 120); ?>" />

redfinch_resize_post_thumbnail

This is a helper function to resize the featured image of the current post. You can optionally pass through a WP_Post or post ID value as the last parameter to display the image from a specific post or page.

<img src="<?php echo redfinch_resize_post_thumbnail(320, 120); ?>" />

redfinch_crop_image

This is very similar to the resize() function, however it will crop the image to fit ensuring that the image is always going to be the given dimensions.

<img src="<?php echo redfinch_crop_image($attachment_id, 450, 450); ?>" />

redfinch_crop_post_thumbnail

Identical to resize(), instead ensuring the featured image is always the given dimensions. You can optionally pass through a WP_Post or post ID value as the last parameter to display the image from a specific post or page.

<img src="<?php echo redfinch_resize_post_thumbnail(320, 120); ?>" />

Hooks

Filters

redfinch_image_resize_get_path

Returns the generated path to the resized image. The value passed through is a string and it expects a string to be returned.

redfinch_image_resize_get_url

Returns the generated URL to the resized image. The value passed through is a string and it expects a string to be returned.

Actions

redfinch_image_resize_pre_generate_image

This action triggers before the resize() method is called on the WP_Image_Editor object. The single parameter is the Image Editor instance.

redfinch_image_resize_post_generate_image

This action triggers after the resize() method is called on the WP_Image_Editor object. The single parameter is the Image Editor instance.