Modern Image Formats (WebP & AVIF)
OptiWave automatically converts uploaded JPEG and PNG files into WebP or AVIF image formats. Visitors receive ultra-compressed modern formats while your original files remain safe on disk.
| Format | Compression Savings | Compatibility |
|---|---|---|
| WebP | 25% – 35% smaller than JPEG | Supported by 96%+ of modern browsers |
| AVIF | 50% – 60% smaller than JPEG | Next-generation format supported by Chrome, Firefox, Edge, Safari 16+ |
Self-Host Gravatars
Standard WordPress comment sections make HTTP requests to secure.gravatar.com for every commenter profile picture. OptiWave's Self-Host Gravatars feature downloads profile images to your local server, converts them to WebP/AVIF, and rewrites <img> and <link rel="preload"> tags. Eliminates third-party DNS lookups and ensures 100% GDPR compliance.
Self-Host YouTube Placeholders
Embedding a single YouTube iframe adds up to 800KB of JavaScript before your visitor even clicks play. OptiWave replaces heavy YouTube embeds with a lightweight 15KB preview thumbnail + play button. The actual iframe is loaded only when the user clicks the play icon.
Add Missing Dimensions (AVIF & SVG)
Prevents Cumulative Layout Shifts (CLS) by auto-detecting width and height attributes for HTML image tags. Includes binary header parsing for AVIF images and viewBox extraction for SVG files.
Cloud-Driven LCP Image Priority
OptiWave measures actual rendered viewport area on real device screens (rather than disk file dimensions). It automatically assigns fetchpriority="high" and injects responsive imagesrcset preloads for true LCP hero images.