Bulk image resizer

常见问题

Why use Bulk image resizer?

Because it is opensource and you have no limits in use. It will allow you to make your site faster and will save you space.

Can I resize images when uploaded?

Yes, when you are in the setting activate “Resize when images are uploaded”

What formats does it support?

It supports jpg, webp, (gif not animated) and png formats in accordance with wordpress directives.

Is it possible to decide not only the size but also the quality of the images?

Yes, you can decide whether to compress high, medium or low quality images.

Can I go back once resized?

Yes if you haven’t removed the original image. Otherwise no.

Can I decide which images to optimize?

Yes, you can select from the media library (list version) the images to be optimized, or use the hooks to extend the script.

How can I add a filter?

You can customize which images to optimize and how, through ‘op_bir_resize_image_bulk’ filter.

Example

<?php 
/**
 * resize images uploaded
 * If it is a post it resizes to 800x800 pixels, if in the title there is no_compress it does not compress it.
 * @return  Boolean|Array [width:int,height:int]
 */
function fn_bir_resize_image ($filename, $attachment_id) {
    if (stripos($filename,"no_compress")) {
        return false;
    }
    $parent_id = wp_get_post_parent_id( $attachment_id);
    if ($parent_id > 0) {
        $post_type = get_post_type( $parent_id );
        if ($post_type == "post") {
            return [800,800];
        }
    }
    return true;
}
// Called during bulk.
add_filter( 'op_bir_resize_image_bulk', 'fn_bir_resize_image', 10, 2);
?>

Hooks:
op_bir_resize_image_bulk_suffix returns the suffix to be added to the image if the original is not deleted
bulk-image-resizer-before-setup-form adds html to the beginning of the setting form
bulk-image-resizer-after-setup-form adds html to the end of the setting form

What about Bulk image resizer

When you upload an image to wordpress, thumbs are created for the template, but the uploaded image is saved and sometimes used.
Bulk image resizer resizes uploaded images to optimize site speed and server space.

Be careful
If you remove the original images, The images are overwritten at the size you set, so it’s important to make a backup first.
They assume no responsibility for any malfunctions or loss of information resulting from the use of the plugin.
From version 1.3 if you have kept the original image you can select the images from the media library and restore them.