Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize vs LWS Optimize – All-in-One Speed Booster & Cache Tools

⚡ Compress, resize and convert your WordPress images to WebP, AVIF and more — automatically. Faster pages, smaller files, same quality. Slow pages cost you visitors, search rankings and sales — and over-sized images are almost always the culprit. Kraken.io Image Optimizer fixes that on autopilot: it compresses, resizes and converts every image you upload — and every thumbnail WordPress generates — so your whole site loads lighter and faster, without you lifting a finger. Every upload is sent to Kraken.io, one of the most advanced image-optimization APIs on the web, optimized in the cloud, and pulled straight back into your Media Library. No binaries, no command line, no server tweaks — install it, add your API key, and stop worrying about heavy images. At its heart is Kraken.io’s intelligent lossy engine: for every single image it finds the exact point where the file is as small as possible while staying visually indistinguishable from the original. Expect to cut 60% or more off your image weight — exactly the win Google PageSpeed and Core Web Vitals reward. From a personal blog to a busy WooCommerce store with tens of thousands of products, it’s an install-and-forget solution that just works. ✨ Why Kraken.io Intelligent lossy & lossless — pick maximum savings with no visible quality loss, or pixel-perfect lossless. Per-image JPEG quality and chroma subsampling control for power users. Convert between formats — turn uploads into WebP, AVIF, JPEG, PNG or GIF. Reach for next-gen WebP or AVIF for the biggest savings (and to clear Google’s “Serve images in next-gen formats” audit), or switch between the classics — whatever fits your site. Optimizes everything WordPress serves — the full-size image and every thumbnail size (thumbnail, medium, large, …) that actually reaches your visitors through responsive srcset. PDFs too, not just images — PDF files in your Media Library are compressed through the same Kraken.io engine, so documents download and embed faster. Smart resizing — cap oversized uploads to a maximum width/height; resized images are enhanced to stay sharp and avoid haloing. Bulk “Krak ’em all” — optimize your entire existing library from a dedicated Bulk Optimize screen or the Media Library bulk action, with live progress. A control panel that tells you everything — a Kraken.io summary panel on the Media Library, Add Media and Plugins screens (plus a Dashboard widget) shows your connection status, plan, quota usage, active settings and supported formats at a glance. Per-image savings & error badges — see exactly how much each image saved, right in the Media grid and list. Plays nice with your stack — works with multisite, page builders, CDNs and local/dev sites. Detects other optimizer plugins and offers one-click deactivation so they don’t fight over your images. 🖼️ Supported formats JPEG, PNG, animated GIF, WebP, AVIF, HEIC/HEIF and PDF. (For security, raw SVG upload is intentionally not enabled — see the FAQ.) ⚡ Built for Core Web Vitals Heavy images are the number-one cause of slow pages. By compressing every size, converting to WebP/AVIF and right-sizing oversized uploads, Kraken.io directly targets the audits that move your score: Properly size images, Efficiently encode images, Serve images in next-gen formats and Largest Contentful Paint. 🎛️ Your images, your control Choose intelligent lossy or lossless, globally. Convert uploads to WebP/AVIF/JPEG/PNG/GIF on the fly — synced live between the panel and settings. Preserve selected EXIF tags (Date, Copyright, Geotag, Orientation, Profile) or strip them for the smallest files. Auto-orient photos from phones and cameras by their EXIF orientation. Decide who can optimize — all logged-in users, authors and up, or administrators only. Pick exactly which image sizes to optimize (the large 1536×1536 and 2048×2048 retina sizes are off by default to save quota — turn them on if your theme serves them). Optimize on upload automatically, or defer and bulk-optimize later. 🔒 Private & secure by design Your API credentials are stored write-only and masked — they are never pre-filled into the page or exposed in your site’s source, so other users on the dashboard can’t read them. Every action is protected by nonces and capability checks, uploads are content-verified, and all optimization happens server-to-server with Kraken.io. No secrets ever reach the browser. 🚀 Get started for free Create a free Kraken.io account — no credit card required — and get testing quota to try the plugin and the rest of the Kraken.io toolset: A fully-featured optimization API with official libraries for PHP, Node.js, Python, Ruby, Java, Go and .NET Web Interface (free) and Web Interface PRO with resizing and sync-to-Dropbox URL Paster and Page Cruncher to optimize images in bulk from anywhere on the web Optimization history and stats, and Kraken.io Cloud Storage You can use a single API key across as many sites as you like — there is no per-site license. ★★★★★ Excellent option for image optimization “The real power of Kraken is their ‘intelligent lossy’ optimization. I use it on all my sites and have never once needed to roll back an image because of too much quality degradation. It is a perfect solution as is.” — collin ★★★★★ Quality results, quality service “The plugin works really well and effortlessly, and the support is prompt, thoughtful, and thorough. I’m hooked.” — illustrata ★★★★★ Optimize according to Google PageSpeed “Kraken was instrumental in optimizing images to comply with Google’s PageSpeed analyzing tool. Our travel blog now sports Google’s ‘mobile friendly’ tag for mobile searches.” — Walter Schaerer ★★★★★ Perfect solution to speed up site! “I love this plugin! All my questions are quickly responded to and I see a huge saving in image size without losing quality. Highly recommend!” — ezone69 Connect with Kraken.io Website: https://kraken.io Plans & pricing: https://kraken.io/pricing Twitter / X · Facebook · GitHub

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!