WP Plugin Webp Converter For Media
Test report

Converter for Media - Optimize images | Convert WebP & AVIF

Introduction - Comprehensive image optimization for WordPress

Webp Converter For Media by matt plugins - Optimize images by convert WebP & AVIF, first released on 2019-06-16, is an outstanding WordPress plugin that revolutionizes image optimization to boost website performance. With over 500 000+ active installations the plugin not only offers conversion of images to WebP and AVIF formats, but is especially known for its high compression rate without quality loss, resulting in a significant reduction of page weight. Unique is the fully automatic image optimization that captures both existing and newly uploaded images, providing a continuous advantage for page speed and thus for SEO rankings. The target audience mainly includes users of modern browsers, of which over 90 % support WebP. The excellent reviews with an average score of 4.9 out of 5 stars from 1 081 reviews in the WordPress Plugin Directory underline user satisfaction. The following section goes into the specific features that enable these benefits.

"The plugin delivers what we've been promised since WordPress 6.0: a proper way to replace JPEG and PNG with WebP images to make our sites faster."

Features - Automatic and versatile image conversion

The WordPress plugin Webp Converter For Media impresses with its automated image optimization that reliably converts both existing and newly uploaded images. A notable feature not mentioned in the first paragraph is support for additional directories. This function enables optimization of images stored not only in the Media Library but also in directories like /plugins and /themes with the Pro version required for this extended feature.

"The ability to optimize images in directories outside the Media Library sets this plugin apart from many other solutions."

Free Features - Extensive functionality at no cost

• Image optimization - Images are automatically converted to the WebP format, significantly reducing file size without quality loss.
• Automatic conversion - New images are converted immediately after being uploaded to the Media Library.
• Original image safety - Original images remain untouched and securely stored.
• WebP support - The plugin detects browsers that support WebP and serves appropriate images.
• No redirects - Optimized image delivery without additional loading time from redirects.
• Compatibility with HTML tags - Works with common HTML elements for image display.
• Data reduction - Reduced data transferred when loading images, which decreases load times.
• No residues - Removal of all plugin traces upon uninstallation.

Pro Features - Advanced optimization options

• AVIF support - Enables conversion to the AVIF format for even better compression and image quality.
• Support for additional directories - Optimization of images in further directories like /plugins and /themes.
• Access to advanced features - Additional image optimization options for improved performance.

"The Pro version is particularly valuable for sites with extensive image archives in various directories."

License & value for money - Balancing cost efficiency and functionality

The Webp Converter For Media plugin offers a free version that already provides a wide range of important features. For users who have higher image optimization demands and want to use the Pro features, a paid version is available. The Pro version is especially popular with users who run commercial websites and large image libraries. The value for money is perceived as reasonable, particularly when the advanced features are used to further optimize load times. Some users, however, feel the costs are relatively high, although the effective image compression and the resulting performance gains are often highlighted positively.

"Wonderful plugin, I paid for the Pro version and it's worth the money."

Technical details - A look at the inner workings

The WordPress plugin Webp Converter For Media is characterized by a well-thought-out technical architecture that enables efficient conversion of images to WebP and AVIF formats. On the file system level it uses custom PHP routines to dynamically switch the MIME type while keeping the image URL unchanged. This technique minimizes potential integration issues with caching solutions and other WordPress plugins. Developers can use an alternative loading path via PHP if the standard rewrite rules are blocked, which is controlled by specific .htaccess settings. It also supports image conversion from directories such as /plugins and /themes, which can be extended via hooks and filters. The integration of shortcodes and APIs gives developers additional freedom to create advanced implementations.

System requirements - Minimum requirements for smooth operation

To use the Webp Converter For Media plugin, certain system requirements are necessary. Minimum system requirements include PHP version 7.1 and WordPress version 4.9. The plugin is compatible and tested up to WordPress version 5.8. The current plugin version is 6.5.5, and it was last updated on 2026-04. These requirements ensure that the plugin works efficiently on both older, stable systems and modern setups, with broad compatibility being notable.

"It's important to check the system requirements before installation to ensure smooth functionality."

Quality - Efficient conversion without quality loss

The quality of the Webp Converter For Media plugin is primarily characterized by excellent image optimization that occurs without noticeable quality loss. Converting images to WebP and AVIF formats not only significantly reduces file size but also preserves the visual integrity of the images. Image performance is greatly improved, resulting in fast load times and an optimized user experience. Furthermore, automated conversion contributes to efficiency as it occurs without manual intervention and leaves the original image files untouched, ensuring data safety. The ability to convert images from other directories such as /plugins and /themes increases the plugin's versatility immensely. In particular, the Pro version convinces with several additional features that are highly beneficial for websites with extensive media archives.

"It works very well, converts to WebP without losing quality. Significantly sped up my site."

Support - Experiences with the support service

The support for the Webp Converter For Media plugin is consistently rated positively. Users praise the fast and effective assistance from the developer, which is mentioned several times in reviews. When contacts are made primarily via the support forum in the WordPress Plugin Directory or directly via the developers' site, users often receive a solution to their problems the same day. The personal and committed help of the development team is frequently mentioned. Nevertheless, there are individual voices that point to inadequate help, especially for more specific problems or during uninstallation. The recommendation to try the PRO version implies that additional support may primarily be available to paying users.

"The team's support is outstanding and really fast. Thanks, Mateusz, for your great work."

Rating - User opinions and experiences

The plugin Webp Converter For Media has received impressive ratings in the WordPress Plugin Directory, with an average of 4.9 out of 5 stars from a total of 1 081 reviews. This high rating reflects users' largely positive experience with the plugin's functionality and effectiveness. Many specifically praise the seamless integration and the noticeable improvement in website loading times.

One frequently mentioned praise is the automatic image optimization, which provides users with significant relief in maintaining their websites. On the positive side, the following quote was often cited as representative:

"It works very well, converts to WebP without losing quality. Significantly sped up my site."

However, there are also critical voices reporting negative experiences. Not all users were satisfied with the plugin's performance. A critical feedback highlights problems caused by the plugin:

"Think a hundred times before you install this plugin. Things only got worse on my site."

Despite individual negative experiences, the overwhelming majority of reviews remain very positive. Users appreciate the reliable performance of the plugin, as another praising comment makes clear:

"The plugin delivers what we've been promised since WordPress 6.0: a proper way to replace JPEG and PNG with WebP images to make our sites faster."

In summary, the Webp Converter For Media is perceived by most users as very useful and effective despite occasional criticism.

Criticism - Potentials and Problem Areas of the Plugin

Criticism of the Webp Converter For Media plugin covers several aspects that users have pointed out in their experiences. A frequently mentioned issue is the lack of communication and clarity from the developer regarding some plugin features, particularly why conversion to the WebP format sometimes does not work. Users also complain about the missing warning about the consequences of deactivating the plugin, which can lead to unexpected problems.

It is also reported that the plugin sometimes blocks the media library or increases the number of files, which can lead to unwanted effects on the website. These problems seem to occur especially with specific server configurations, such as blocked Htaccess rewrites, which require technical support from the hosting provider. Another critical feedback concerns the removal function for already converted images upon uninstallation, which is perceived as inconvenient.

User suggestions for improvement propose that the plugin should better communicate which features are exclusive to the Pro version and how automatic compression could be optimized.

"I would like to see some improvements here."

Conclusion - Evaluation of Functionality and Popularity

The Webp Converter For Media plugin offers a comprehensive solution for image optimization on WordPress websites. Developed by Mateusz Gbiorczyk, it impresses with automation and support for modern image formats that can significantly improve load times. A multitude of satisfied users and high ratings underscore the plugin's efficiency and user-friendliness. Nevertheless, there are criticisms, particularly regarding deactivation and removal of the plugin, and a need for more transparent communication about Pro features. Despite these challenges, it remains a preferred choice for many WordPress users seeking to optimize their website performance due to its extensive features and flexibility.