DZIEWA Media Converter vs LWS Optimize – All-in-One Speed Booster & Cache Tools

DZIEWA Media Converter creates sidecar .avif and .webp files next to your originals (no replacement of JPG/PNG in the Media Library). On the front end it can rewrite tags to so browsers pick AVIF/WebP when available. The plugin is entirely free to use — no license fees, no pro version, and no paid add-ons. How it works The plugin generates additional AVIF and/or WebP files beside every JPEG/PNG you upload. Originals are never touched or replaced — they remain in the Media Library and on disk as a safe fallback. The optional content filter detects tags in your post content and wraps them in so modern browsers download the smaller AVIF/WebP version, while older browsers transparently fall back to JPG/PNG. Conversion AVIF + WebP, AVIF-only or WebP-only output modes. AVIF requires PHP GD built with AVIF support; the plugin auto-detects this on activation and gracefully falls back to WebP-only when AVIF is unavailable. Configurable quality per format (independent AVIF and WebP quality sliders in settings). Automatic conversion on upload — new attachments are converted in the background via WP-Cron or Action Scheduler (when available), so the upload screen never blocks. Intermediate sizes (thumbnails) are optionally converted too, so every srcset variant has its own AVIF/WebP sidecar. Existing media Background queue processes already-uploaded images in configurable batches (default 20 files per run, range 5–200). You can scope the queue to a single uploads subfolder and/or a date range to avoid scanning the whole library at once. Bulk action in the Media Library — select images and run Convert to AVIF/WebP from the bulk menu. Per-attachment button — Media Library list, attachment edit screen and media modal each show a Convert to AVIF/WebP button next to live savings stats (before/after size, percentage saved per format). Front end (content rewriting) Optional rewrite in the_content and post thumbnails — browsers automatically pick the lightest format they support. Lookup of attachment IDs from URLs is cached in the WordPress object cache (Redis/Memcached when available) and memoised per request, so heavy pages with many images stay fast. Tools & admin UI Cleanup tool — remove old generated .avif / .webp sidecars by age (30/60/90/120 days) and folder scope, with a per-folder picker. Admin bar download — optional link on singular posts/pages to download the original JPG/PNG of the featured image (useful for social platforms that don’t accept AVIF/WebP). Event log — last 100 events (errors, conversions, queue runs) visible on the settings page. Three-option uninstall dialog — when removing the plugin you choose between Cancel, Remove (keep generated files) or Remove and delete files. Privacy & dependencies No external services, no remote calls, no tracking. Everything runs on your own server. Requires PHP 8.3+ and PHP GD with WebP support (imagewebp). AVIF is optional. Fully translated to Polish; English source strings ready for further translations via GlotPress.

All-in-one speed optimization: caching, WebP/AVIF, Critical CSS, lazy loading, CDN, and more. Instantly boost Core Web Vitals and site speed! License Released under the terms of the GNU General Public License. Transform Your WordPress Site’s Performance in Just One Click A premium-quality, 100% FREE performance optimization suite developed by top web host LWS – but works perfectly on ANY WordPress hosting! LWS Optimize delivers lightning-fast load times with just one plugin: comprehensive caching, WebP/AVIF image conversion, Critical CSS generation, Lazy Loading, Cloudflare CDN integration, built-in PageSpeed testing – all with zero fees and no host restrictions. Why Your Site Needs LWS Optimize Boost Core Web Vitals scores – Improve your Google rankings Reduce bounce rates – Keep visitors engaged with faster loading times Increase conversions – Speed directly impacts your bottom line Save money – Get premium optimization features without paid subscriptions Simple setup – Pre-configured profiles make optimization effortless Key Features Complete Caching System – File-based page cache, browser cache, and server-side caching (Varnish) serve pages in milliseconds Memory-Based Object Cache – Memcached integration keeps database queries lightning-fast Intelligent Media Handling – Advanced Lazy Loading for images/iframes, automatic dimension attributes, GZIP compression, WebP/AVIF conversion with class/URL exclusions Advanced CSS/JS Optimization – Minify, combine, remove unused CSS, generate Critical CSS, preload essential resources, defer/delay JavaScript execution HTML Optimization – Minify HTML, strip query strings, disable emojis One-Click CDN Setup – Seamless Cloudflare integration with token activation and synchronized cache purging Built-in Performance Testing – Run Google PageSpeed Insights directly in WordPress and track improvement history Database Optimization – Scheduled cleanup of revisions, spam, transients and more User-Friendly Interface – Pre-configured optimization profiles, temporary disable options, and “AI Magic” presets Through our 1-click Auto-Installer, LWS deploys WordPress in seconds with tailored packs like AI Site Generator, Divi Builder bundle, or WordPress + WooCommerce setup. Each pack includes essential LWS plugins—with LWS Optimize working even faster on our WordPress hosting, shared hosting, and cPanel hosting. You can also install it manually via Plugins › Add New, regardless of where your site is hosted. Front-end Optimization Minify and combine CSS & JS Preload critical CSS and fonts Remove unused CSS & generate Critical CSS Defer or delay JavaScript execution Minify HTML Strip query strings, disable emojis Media Optimization Smart Lazy Loading for images, iframes & videos (with exclusion options) Automatic width/height attributes to prevent layout shifts GZIP compression for HTML, CSS, and JavaScript Advanced audio/video preload controls Image Optimization Automatic WebP/AVIF conversion and compression (using Imagick or API) 2000 free API credits monthly (additional credits available) One-click restoration of originals Auto-convert on upload option Caching System High-performance file-based page cache with smart purging and preloading Object cache with Memcached integration Server-side cache with Varnish/LWSCache (optimized for LWS hosting) Browser cache headers Configurable cache exclusions for mobile, logged-in users & dynamic content CDN Integration One-click Cloudflare setup DDoS protection with worldwide distribution Synchronized cache purging Database Optimization Weekly automatic cleanup of revisions, drafts, spam, and transients Performance Testing Integrated Google PageSpeed Insights testing Performance history tracking Enjoy dramatically faster load times, improved Core Web Vitals scores, and higher search engine rankings – all with minimal configuration required!