Arshad Shah

ArshadStudio Bulk Image Converter to WebP adds a dashboard screen that walks you through three steps:
<ol>
<li>Choose a conversion type — JPG to WebP or PNG to WebP.</li>
<li>Preview the matching images — the plugin lists every image in your Media Library that matches the selected format, with a thumbnail, filename, and file size.</li>
<li>Convert — optionally tick “Delete the original after conversion,” then start. A live progress bar shows status, and each thumbnail is marked with the percentage saved or a failure flag.</li>
</ol>
The plugin performs genuine pixel-level re-encoding using the Imagick extension (preferred) or the GD extension — it never simply renames a file extension. Every output file is verified against the WebP binary signature before it is accepted, so you can trust that the result is a real WebP image.
Conversion runs one image per request over AJAX, which avoids PHP execution-time limits on large libraries.
When “delete originals” is enabled, the Media Library attachment is repointed to the new WebP file and its metadata is regenerated, keeping the library consistent.

ArshadStudio Bulk Image Converter to WebP

Bulk-convert JPG or PNG images in your Media Library into real WebP files, with an optional toggle to delete the originals after conversion.

Daisuke Yamamoto

Our WordPress plugin offers precise control over image compression in your media library. 
You can optimize the compression quality for each resized image, striking the perfect balance between visual appeal and fast page loading. 
A real-time preview feature lets you instantly see the results of different compression levels.
Security is enhanced through an EXIF data removal function, which strips sensitive information like GPS coordinates from your uploaded images.
For advanced performance, the plugin utilizes WebP technology on compatible servers. 
It automatically generates and serves WebP versions of your images to supporting browsers, replacing JPEG or PNG formats without manual URL adjustments. 
This seamless optimization significantly improves Core Web Vitals (CWV), enhancing your site’s overall performance and search engine ranking.
<ul>
<li>Set the quality level in the image type (JPEG / PNG / WebP) and size name table.</li>
<li>Set the default quality level if not set.</li>
<li>Set the quality level for WebP compression of the original image.</li>
</ul>
The following can be set as options.
<ul>
<li>Guarantee a Secure Filename (Deny a multibyte filename)</li>
<li>Strip Exif Data</li>
<li>Autoset Alt from Exif (only JPEG)</li>
<li>Add a Quality Level Suffix</li>
<li>Enable Interlace/Progressive</li>
<li>Enable Generating WebP</li>
<li>Enable PNG8</li>
<li>Optimize “srcset” Attribute</li>
<li>Force Adding the Query String for Image Cache Clear</li>
<li>Optimize Delay by WP-Cron</li>
</ul>
<h3>Other functions</h3>
In addition, it has the following functions.
<ul>
<li>Add Some Custom Image Sizes</li>
<li>Test Quality Level</li>
<li>Change of Big Image Threshold</li>
<li>Reset Settings</li>
<li>Run Re-Compression</li>
<li>Auto Re-Compression using WP-Cron</li>
</ul>
<h3>How to use</h3>
After installing and activated, WebP auto-generation and small image compression will be high. 
Adjust the settings if necessary and recompress all images.
<ol>
<li>Install</li>
<li>Activate</li>
<li>Change Settings (if you need)</li>
<li>Recompress uploaded images (if you need)</li>
</ol>
Be sure to make a backup before recompressing.
<h4>Access to the settings screen</h4>
<ul>
<li>Setting Screen</li>
<li>Go to “Image Qualities”</li>
</ul>

Image Quality Control | Still BE


　余分な機能がなく、必要な部分には詳細な設定も用意されており、画像の圧縮だけをしてくれるシンプルで高品質なプラグインはないかと考えた際の最適解ではないでしょうか。



　画像圧縮のプレミアムプラグインに優るとも劣らないプラグインかと思います。



　ただ、これはかなりのレアケースだと思いますので評価を下げてはいませんが、再圧縮メニューを表示する際に、自サイトの画像ファイルが非常に多い場合、メニュー画面がまともに操作することができないくらいに重くなってしまうという状況が発生しました。（メディアファイル投稿時の自動圧縮に関しては問題なく機能しています）



　とは言えこれは、私のサイトは画像投稿コミュニティのため、画像ファイルが９万を超えてしまっているために起きたことですので、一般のケースには当てはまらないでしょう。



　繰り返しになりますが、画像ファイルが５千ほどのサイトでも、全画像の再圧縮機能も全然問題なく機能していましたので、一般的なユースケースでは問題が起こらないかと思いますし、プラグイン自体は素晴らしいものでした。



　ただ欲を言うなら、私のようなケースでも利用することができるように、オプションテーブルなどを利用せず内部的な処理のみで軽量な、全画像の再圧縮ボタンも作っていただけるのなら、大変ありがたいとは思います。


いい意味で必要最低限の機能性

Boost speed and Core Web Vitals with smart image optimization and auto WebP generation.

ArshadStudio Bulk Image Converter to WebP vs Image Quality Control | Still BE