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

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