Active installationsNewAdoption metric — not a quality score
WordPress.org ratingNo WordPress.org ratings yet
Official packageDirect from WordPress.org
Repository metrics are context, not quality scores. Active installations measure adoption and can strongly reflect a plugin’s age and historical popularity. Ratings, recent updates and “Tested up to” metadata also do not guarantee modern code, error-free operation, security, feature completeness or suitability for a particular site. Why active installs don’t tell the whole story →
WP PlugIndex currently records Petro SEO Images to WebP version 1.1.2 as active, updated 5mo ago and tested up to WordPress 6.9.
Overview
About this plugin
Petro SEO Images to WebP converts your existing JPEG and PNG attachments to WebP in bulk, then serves them on the front-end through the standard <picture> element with a full responsive srcset. The original files stay untouched on disk, so reverting is as simple as flipping a switch.
Designed to be small, dependency-free and predictable. No external services, no images uploaded anywhere, no opaque queue.
What it does
Converts every registered image size (full + thumbnails) to.webp next to the original (e.g. photo.jpg → photo.jpg.webp ).
Wraps <img> tags from wp_get_attachment_image() and the_content in <picture><source type="image/webp">…</picture>, preserving full srcset and sizes.
Skips images automatically if a previous run failed because of filesystem permissions, so you can retry on demand without reprocessing the whole library.
Ramps the WebP quality down (75 → 60 → 45 → 40) when the encoded file ends up larger than the original, so you never ship a “WebP” that is heavier than the JPEG.
Idempotent: re-running the bulk job only touches new or updated images.
What it does NOT do
It does not delete or modify your original JPG/PNG files.
It does not require Imagick or a specific image library beyond what WordPress already uses ( wp_get_image_editor() ).
It does not phone home, register endpoints, or load remote scripts.
Privacy
The plugin processes images locally using WordPress’s built-in image editor. No data is sent to third-party services.
WordPress.org metadata
Plugin tags
Topics listed for this plugin in the WordPress.org directory.
images
performance
picture
seo
webp
Compatibility & maintenance
Compatibility & maintenance
Tested up to WordPress 6.9
Not yet marked as tested with WordPress 7.1. WordPress.org currently lists Tested up to 6.9.
Current WordPress releaseWordPress 7.1
WordPress.org Tested up to6.9
Minimum requirementsWordPress 5.8 · PHP 7.1
Update activity16 May 20265mo ago
“Tested up to” is directory metadata supplied by the plugin author. WP PlugIndex does not turn an older declaration into a claim that the plugin is incompatible.
Changes recorded by WP PlugIndex
Recent tracked changes
No tracked version or compatibility changes have been recorded by WP PlugIndex yet.
Tracking & source
WP PlugIndex tracks public WordPress.org directory metadata and records selected version, compatibility and availability changes as they are detected.
