Working with Image Converter

Convert classic WordPress media uploads into modern WebP files, replace the references everywhere they appear, and keep your website lightning fast.

Features

• Automatic WebP generation for JPEG, PNG, and GIF uploads, including intermediate sizes.
• Background processing via WP-Cron with configurable batch sizes and manual triggers.
• Featured image reassignment that points posts, pages, and products to the generated WebP attachment automatically.
• Dynamic delivery that swaps attachment URLs and srcset entries with the generated WebP files when enabled.
• Interactive admin dashboard with conversion metrics, requirement checks, and an activity log.
• Clean uninstall that removes options and custom metadata.

Requirements

• WordPress 6.0 or newer
• PHP 7.4 or newer (PHP 8.0+ recommended)
• GD extension with WebP support or Imagick with WebP enabled

Directory structure

working-with-image-converter/
├── admin/
│   └── views/
│       └── html-admin-page.php
├── assets/
│   ├── css/
│   │   └── admin.css
│   └── js/
│       └── admin.js
├── includes/
│   ├── class-wwic-admin.php
│   ├── class-wwic-autoloader.php
│   ├── class-wwic-converter.php
│   ├── class-wwic-logger.php
│   ├── class-wwic-notices.php
│   ├── class-wwic-plugin.php
│   ├── class-wwic-processor.php
│   ├── class-wwic-replacer.php
│   ├── class-wwic-reports.php
│   ├── class-wwic-requirements.php
│   └── class-wwic-settings.php
├── languages/
│   ├── working-with-image-converter-it_IT.po
│   └── working-with-image-converter.pot
├── readme.txt
├── README.md
├── uninstall.php
└── working-with-image-converter.php

Development

1. Clone the repository into wp-content/plugins/.
2. Install dependencies or tooling as needed (no build step required).
3. Activate Working with Image Converter from the WordPress dashboard.
4. Visit the Image Converter menu item to configure options and run conversions.

Manual testing

After converting an attachment:

1. Open the post, page, or product that previously used the original asset as its featured image and verify that the featured image now points to the generated WebP attachment (inspect the media details to confirm the MIME type is image/webp).
2. For WooCommerce products, edit a product where the image belonged to the gallery and ensure every gallery slot now references the WebP attachment while the original file remains listed in the Media Library.
3. Browse the edited post, page, or product on the front end (checking long and short product descriptions when applicable) to confirm the inline images resolve to WebP URLs without broken markup.
4. Open the Media Library details for both attachments: the original asset should still exist, and the WebP version should carry over the same alternative text.

Translations

The plugin ships with a template (.pot) file and an Italian translation (it_IT.po). You can generate additional locales by copying the template and translating the strings.

License

Released under the GPLv2 or later.