diegopetroncari

<p><strong>Petro SEO Images to WebP</strong> converts your existing JPEG and PNG attachments to WebP in bulk, then serves them on the front-end through the standard <code><picture></code> element with a full responsive <code>srcset</code>. The original files stay untouched on disk, so reverting is as simple as flipping a switch.</p>
<p>Designed to be small, dependency-free and predictable. No external services, no images uploaded anywhere, no opaque queue.</p>
<h4>What it does</h4>
<ul>
<li>Converts every registered image size (full + thumbnails) to <code>.webp</code> next to the original (e.g. <code>photo.jpg</code> <span aria-hidden="true" class="wp-exclude-emoji">→</span> <code>photo.jpg.webp</code>).</li>
<li>Wraps <code><img></code> tags from <code>wp_get_attachment_image()</code> and <code>the_content</code> in <code><picture><source type="image/webp">…</picture></code>, preserving full <code>srcset</code> and <code>sizes</code>.</li>
<li>Skips images automatically if a previous run failed because of filesystem permissions, so you can retry on demand without reprocessing the whole library.</li>
<li>Ramps the WebP quality down (75 <span aria-hidden="true" class="wp-exclude-emoji">→</span> 60 <span aria-hidden="true" class="wp-exclude-emoji">→</span> 45 <span aria-hidden="true" class="wp-exclude-emoji">→</span> 40) when the encoded file ends up larger than the original, so you never ship a “WebP” that is heavier than the JPEG.</li>
<li>Idempotent: re-running the bulk job only touches new or updated images.</li>
</ul>
<h4>What it does NOT do</h4>
<ul>
<li>It does not delete or modify your original JPG/PNG files.</li>
<li>It does not require Imagick or a specific image library beyond what WordPress already uses (<code>wp_get_image_editor()</code>).</li>
<li>It does not phone home, register endpoints, or load remote scripts.</li>
</ul>
<h4>Privacy</h4>
<p>The plugin processes images locally using WordPress’s built-in image editor. No data is sent to third-party services.</p>


Petro SEO Images to WebP

Bulk-convert media library images to WebP for better SEO and Core Web Vitals. Originals stay on disk; the front-end serves WebP via the  tag.

Mario Peshev

DevriX

Lachezar Gadzhev

<p>DX Webp Picture Tag Image Wrapper filters the content and replaces the img tags with picture tags by adding two sources – one with the image followed by .webp extension<br />
and one with the original image.</p>
<p>The plugin supports jpg, jpeg and png formats</p>
<p><em>Your site needs to support Webp images</em></p>
<p>DX Webp Picture Tag Image Wrapper resolves the issue with Accept header on Safari that doesn’t include the webp format. Using the picture tag<br />
allows the browser to render Webp images, if they are supported, without relying on that header</p>


DX Webp Picture Tag Image Wrapper

Automatically wraps content images in picture tag by making one of the sources webp. It supports Gutenberg content

Petro SEO Images to WebP vs DX Webp Picture Tag Image Wrapper