Erdo Image Optimizer is a complete Image SEO & Performance Suite for WordPress. Convert images to WebP/AVIF, bulk-fix alt text, sanitize filenames, enable lazy loading, clean up unused media, and run a 6-point SEO audit — all from a single, modern dashboard.

Most image optimization plugins stop at compression. Erdo goes further: every image in your media library receives a professional SEO health score (out of 6 points). You will know exactly which images are hurting your Google rankings and how to fix them, in bulk, in minutes.

Why Erdo Image Optimizer?

Image SEO Audit (6 Points): Every image gets a score from 0 to 6 based on alt text, filename quality, title, contextual relevance, dimensions, and format. Fix failing criteria with one click — no guesswork.
WebP & AVIF Converter: One-click conversion from JPEG, PNG, GIF, and HEIC/HEIF to WebP or AVIF. Smart Quality mode automatically finds the smallest file size that still looks great.
Bulk Alt Text Generation: Automatically generate descriptive alt text from filenames for every image missing it. Fix hundreds of images in seconds — critical for accessibility and image SEO.
Filename Sanitizer: Transforms messy uploads like IMG_1234 (copy).JPG into SEO-friendly professional-web-design.webp at upload time. Bulk-rename existing images with automatic database reference updates.
Unused Media Cleanup: Scans your entire library to find images that appear nowhere on your site. Free up disk space and stop confusing search crawlers with orphaned files.
Lazy Loading & WebP Serving: Inject loading="lazy" into content images automatically. Serve WebP to compatible browsers via .htaccess rewrite (Apache) or PHP <picture> fallback (all servers).
Background Queue & WP-CLI: Bulk-convert thousands of images via WP-Cron — close the browser tab and let it run. Full CLI support: wp erdo convert, audit, restore, stats, clean-cache.
BunnyCDN & REST API: Upload converted images directly to BunnyCDN storage. Headless access via /wp-json/erdo/v1/stats and /wp-json/erdo/v1/audit REST endpoints.

Full Feature List

Compression & Conversion

One-click WebP and AVIF conversion with original backup and one-click restore
HEIC/HEIF (iPhone photos) conversion to WebP/AVIF via Imagick
Smart Quality mode — automatically finds the smallest file size that still looks great
Lossless mode for zero-quality-loss compression
Max Upload Width — automatically resize oversized images before conversion
EXIF metadata stripper — reduce file weight and protect photographer privacy
GIF, JPEG, PNG, HEIC WebP/AVIF in one click

Image SEO & Alt Text

Image SEO Auditor with 6-point health score for every image in your library
Bulk Alt Text — generate alt text from filenames for all images missing it
Automatic filename sanitization on upload (removes spaces, special chars, uppercase)
Bulk rename all existing filenames with automatic database reference update
SEO Audit CSV export — download a full spreadsheet for reporting
Missing Alt Text filter — focus the dashboard on images that need fixing

Performance & Delivery

Lazy loading (loading="lazy") injected into content, thumbnails, and gallery images
WebP serving via .htaccess rewrite (Apache) or PHP <picture> element rewriter
BunnyCDN integration — upload converted images directly to CDN storage
Background Queue — bulk convert via WP-Cron, browser tab can be closed

Developer & Dashboard

REST API: /wp-json/erdo/v1/stats and /wp-json/erdo/v1/audit endpoints
WP-CLI commands: wp erdo convert, audit, restore, stats, clean-cache
Dashboard widget — key stats visible from wp-admin home
Before/After comparison slider — drag to compare original vs optimized
Right-click context menu on every image card
Grid size selector (Small / Medium / Large) with localStorage persistence
SVG upload support with automatic XSS sanitization for administrators
Multisite / network admin support
Modern, clean dashboard with format badge and SEO score on every card

Erdo Image Optimizer: Compress & Convert to WebP/AVIF (SEO Audit, Alt Text, Lazy Load)

Why Erdo Image Optimizer?

Full Feature List