Description
Pixellize Image Optimizer is a fast, lightweight, and beginner-friendly WordPress plugin that automatically converts uploaded images into modern WebP format.
It ensures that your website loads faster by replacing original image URLs across your entire site β including post content, image tags, and responsive srcset.
β‘ No manual conversion. No complex setup. Just upload and optimize.
π₯ Key Features
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Automatic WebP conversion on image upload
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Supports JPG, JPEG, PNG, BMP, and AVIF
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Skips images already in WebP format
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Smart fallback to Imagick if GD is unavailable
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Adjustable WebP quality (0β100, default: 85)
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Replace image URLs in:
- Attachment tags
- srcset (responsive images)
- Post/page content
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Saves storage by deleting original images after successful conversion
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Keeps original file safe if conversion fails
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Prevents duplicate conversions
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Activation blocked if no supported library (GD/Imagick) is found
π Why Use This Plugin?
- Improve Core Web Vitals (LCP, CLS)
- Boost SEO rankings
- Reduce page load time
- Save server storage
- Deliver modern image formats automatically
Requirements
- PHP 7.4 or higher
- PHP GD extension (recommended) or Imagick
Usage
- Upload images normally via Media Library
- Images are automatically converted to WebP
- Customize settings under Tools Pixellize Image Optimizer
- Already converted images are skipped automatically
Roadmap
- Bulk conversion for existing media
- Option to keep original images
- Lazy loading integration
- CDN compatibility improvements
License
This plugin is licensed under GPL v2 or later.
Author
Pixellize
π https://pixellize.com
Screenshots
Installation
- Download the plugin ZIP file
- Go to Plugins Add New Upload Plugin
- Upload and click Install Now
- Activate the plugin
- Configure settings under Tools Pixellize Image Optimizer
FAQ
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What image formats are supported?
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JPG, JPEG, PNG, BMP, and AVIF. GIF is not supported.
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Does it convert existing images?
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No, currently only new uploads are converted. Bulk conversion will be added in future updates.
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Is the original image deleted?
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Yes, but only after successful conversion. If conversion fails, the original file remains safe.
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What if my server doesnβt support GD?
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The plugin automatically uses Imagick as a fallback. If neither is available, activation will be blocked with an admin notice.
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Can I control image quality?
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Yes, you can set quality from 0 to 100. Default is 85.
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What happens if I upload a WebP image?
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It is skipped β no processing is done.
Reviews
Contributors & Developers
“Pixellize Image Optimizer” is open source software. The following people have contributed to this plugin.
Contributors
Translate “Pixellize Image Optimizer” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
0.1
- Initial release
- Auto WebP conversion (JPG, PNG, BMP, AVIF)
- GD with Imagick fallback
- Quality control option
- Format selection settings
- URL replacement across site
- Activation check for required libraries