Active installations20Adoption metric — not a quality score
WordPress.org rating5.0 / 5 from 1 ratings
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 Auto WebP & Alt Optimizer version 1.5 as active, updated 7mo ago and tested up to WordPress 6.9.
Overview
About this plugin
You know that Site Speed and SEO are the keys to success.
Auto WebP & Alt Optimizer is a lightweight yet powerful tool designed to solve two major problems automatically:
Image Size (Speed): It automatically converts your uploaded JPG/PNG images into the modern WebP format. WebP images are significantly smaller (often 30-50% smaller) than standard JPEGs.
New in 1.4: We now use the native PHP GD library ( imagewebp ) to ensure compression settings work on all server environments, bypassing common WordPress cache issues.
Image SEO (Ranking): It automatically cleans up your image filenames (removing hyphens and underscores) and sets them as the Alt Text. Google relies on Alt text to understand images, and this plugin ensures you never forget to fill it in.
4 Quality Levels: Choose from Low (20), Medium (50), High (80), or Very High (90) quality presets to suit your needs.
Auto Alt Tags: Converts my-product-photo.jpg to “My Product Photo” automatically.
Zero Bloat: No complex configuration. Just install, select a level, and forget.
Why use this plugin?
Boost Core Web Vitals: Smaller images mean faster LCP (Largest Contentful Paint).
Save Storage: Stop storing duplicate versions of images. original files are replaced to save space.
Automate SEO: Save hours of manual work filling in Alt tags.
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Note: This plugin processes images upon upload. It does not currently process images already existing in your Media Library.
WordPress.org metadata
Plugin tags
Topics listed for this plugin in the WordPress.org directory.
auto alt
image compression
image optimizer
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 6.0 · PHP 7.4
Update activity26 Mar 20267mo 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.
