Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize vs Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization

⚡ 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

Optimole is the complete image optimization powerhouse that helps you compress images automatically, resize them, and deliver your images via lightning-fast CDN from 450+ locations. From product images to portfolio photos, Optimole handles it all. With WebP and AVIF conversion, intelligent lazy loading, and ML-powered optimization, Optimole dramatically improves page speed, Core Web Vitals, and SEO rankings—all with zero configuration required. Say goodbye to slow-loading images and hello to a faster website that visitors and search engines will love. ⚡ Quick Links Test Your Site – See how much faster we can make your site Documentation – Learn how to use all features Support Forum – Get help from our team How to Speed Up WordPress – Essential optimization tips Go Pro – Upgrade for more monthly visits 🚀 Summary of What Optimole Does Compress images without quality loss – ML-powered technology preserves details Global AWS CloudFront CDN – 450+ locations for instant loading WebP & AVIF conversion – Up to 80% smaller file sizes [PRO] Complete image offloading – Store images in the cloud and free up server space with one-click restoration jQuery-free lazy loading – Improves Core Web Vitals Adaptive image sizing – Perfect fit for every device Cloud media library – Manage assets across multiple sites Support for all file types – Images, video, audio, documents Automatic watermarking – Protect your visual content Zero configuration needed – Install and forget Free plan with all features – For sites with up to 2000 visits/month Why Choose Optimole Over Other Image Optimization Plugins? Truly Automated Optimization – Install once and let our cloud-based system handle everything Compress images in bulk – Process your entire media library with one click Smaller Images, Same Visual Quality – Advanced ML-powered compression preserves image details Perfect Size for Every Device – Images dynamically resized for each visitor’s exact screen dimensions Lightning-Fast Global CDN – Free delivery from 450+ locations worldwide for instant loading Automatic Next-Gen Formats – WebP and AVIF conversion reduces file size by up to 80% Zero Server Resource Usage – All processing happens in our cloud, keeping your hosting resources free WooCommerce Performance Boost – Optimized product galleries load faster, increasing conversions Eliminate Content Shifting – Perfect placeholder dimensions prevent Cumulative Layout Shift (CLS) Significant Core Web Vitals Improvement – Lower Largest Contentful Paint (LCP) scores Complete Media Management – Cloud library with Digital Asset Management features What’s the Magic Behind Optimole’s Image Optimization? Optimole handles image optimization seamlessly in the cloud—tailored to each visitor in real time. Once installed, it automatically replaces your image URLs with cloud-based ones, without altering the original files on your server. When someone visits your site, Optimole instantly detects their device type, screen size, browser, and connection speed. Based on this data, it delivers the ideal version of each image—perfectly resized, compressed, and converted into the most efficient format their browser supports. How Many Images Can Be Optimized? (Unlimited) We offer an unlimited number of image optimizations in both Free and Pro plans, you will be able to optimize an unlimited number of images for up to 2000 monthly visits. All are delivered from more than 450+ locations around the globe. Features That Make Optimole The Ultimate Image Solution: 🔄 Seamless Bulk Optimization Optimize your entire media library with a single click. Optimole processes your images in the background, so you don’t need to keep your browser open during optimization. Perfect for existing websites with large image collections. 🚀 One-Click Image Offloading [PRO] Free up valuable server space by offloading your entire media library to Optimole’s secure cloud storage. All your images are safely stored and delivered from our optimized CDN, reducing your hosting costs and server load. Need your images back on your server? Our seamless one-click restoration process makes it easy to transfer everything back whenever you want, giving you complete flexibility and control over your media assets. 🌎 CDN Optimole provides free access to an AWS CloudFront CDN with edge locations in more than 450+ cities around the globe. 🖼️ ML-Powered Smart Compression Our machine learning algorithms analyze each image to determine the optimal compression level that balances quality and file size. Unlike basic compression tools, Optimole’s smart compression adapts to image content, preserving important details while aggressively compressing areas where quality loss won’t be noticeable. Making it easy to compress images without sacrificing quality. 🔄 Intelligent Format-Based Optimization Our advanced cloud-based transformation process optimizes images based on format and serves them in next-gen formats automatically. If your visitor’s browser supports WebP or AVIF, Optimole instantly converts and delivers these formats, reducing file size by up to 80% compared to traditional JPEG and PNG, while maintaining visual quality. 💾 Advanced Digital Asset Management (DAM) Take complete control of your media with our built-in DAM system. Store images in the Optimole Cloud to save server space and easily share assets between multiple websites. Our seamless integration with Elementor Builder and WordPress core editor means you can access your optimized cloud images directly from your familiar editing interfaces. 📏 Exact Responsive Sizing Optimole delivers just one image perfectly sized for each visitor’s exact device dimensions – no more generating multiple image sizes or guessing at breakpoints. This means mobile users don’t download desktop-sized images, and desktop users get appropriately high-resolution versions. 📱 Retina & High-DPR Display Support Automatically detect high-resolution displays like Retina screens and deliver images with the perfect Device Pixel Ratio (DPR). Your images will look crisp and sharp on the latest devices without unnecessarily large file sizes on standard displays. ⚡ No Content Shifting with Advanced Lazy Loading Our lightweight lazy loading defers offscreen images for faster initial page loads without any content shifting. Optimole’s implementation doesn’t rely on heavy jQuery dependencies, making it faster than other lazy loading solutions while being more compatible with modern themes. 🔍 AI-Powered Smart Cropping Maintain focus on the important elements in your images with our intelligent cropping system. Whether it’s faces in portraits, products in e-commerce shots, or key elements in landscapes, smart cropping ensures proper sizing without losing the subject’s focus. This is especially valuable for responsive designs where image dimensions change dramatically. 💧 Customizable Watermarking Protect your images with automatic watermarking. Configure your watermark once, select positioning and opacity, and Optimole will apply it to all future uploads automatically. Perfect for photographers, artists, and content creators who need to protect their work. 🖼️ Multiple File Type Support Optimole goes beyond just images. Our cloud dashboard supports uploading and managing a wide variety of file types, including videos, audio files, PDFs, documents, and more. This makes Optimole a comprehensive media management solution, not just an image optimizer. Store all your media assets in one place, organize them efficiently, and access them across all your websites with our cloud library system. 🌈 Enhanced User Experience Features Custom Lazy Load Placeholders – Add brand-matching colors to your lazy-loading placeholders Adaptive Quality – Automatically adjust image quality for visitors on slower connections Background Optimization – Process images without keeping browser tabs open Zero Content Shifting – Prevent layout shifts with perfectly sized placeholders Real-World Use Cases Where Optimole Shines 🛍️ E-commerce Success Story Challenge An online store owner with thousands of product photos was experiencing slow loading times—especially on mobile—leading to high bounce rates and abandoned carts. Solution After installing Optimole, product photos were automatically compressed and served in WebP format from the global CDN. Mobile shoppers now see perfectly sized images for their devices. Results – Significantly reduced page load times – Improved mobile conversions – Better Google Core Web Vitals scores – Faster checkout completion and fewer abandoned carts 📸 Photography Portfolio Transformation Challenge A professional photographer needed to showcase a high-resolution portfolio online without sacrificing photos quality or website performance. Solution Optimole’s lossless compression preserved the fine details in their work while substantially reducing file sizes. The built-in watermarking protected the images, and adaptive sizing ensured visitors on all devices could appreciate the work. Results – Noticeably faster portfolio page loading – Maintained premium photo quality – Prevented unauthorized use with watermarking – Freed up server space via cloud storage 🌍 Travel Blog Acceleration Challenge A travel blog featured beautiful destination photography, but large images were causing slow loading and high bounce rates—especially for readers in remote locations. 🛠Solution Optimole’s smart compression, WebP conversion, and global CDN drastically reduced image loading times. The AI-powered smart cropping kept the focus on key elements, regardless of screen size. Results – Faster loading for readers, even in low-bandwidth areas – Increased reader engagement – More pages viewed per session – Boost in advertising revenue through longer time-on-site 📰 Multi-Author News Site Optimization Challenge A news website with dozens of authors struggled with inconsistent image sizes and formats, causing layout shifts and performance issues. Solution Optimole automatically standardized all uploaded images—fixing dimensions, optimizing compression, and ensuring consistent quality sitewide, regardless of who uploaded the content. Results – Layout shifts from images were virtually eliminated – Bandwidth usage significantly reduced – Core Web Vitals scores improved – Editors saved time with no need to manually resize or compress images Comprehensive Compatibility & Security Optimole works seamlessly with: Supports all major page builders: Elementor, Divi, Beaver Builder, WPBakery, Otter Blocks, Gutenberg, and more Compatible with popular WordPress themes: Neve, Hestia, Astra, GeneratePress, Kadence, and others Built for e-commerce: Seamless integration with WooCommerce to optimize product photos and galleries Works flawlessly with caching plugins: Super Page Cache, WP Rocket, W3 Total Cache, LiteSpeed Cache, and more Your security is our top priority – we don’t store stripped EXIF data on our service. Optimole works behind the scenes and won’t interact with your site’s visitors or collect their data. Our privacy-first approach means we only process what’s needed for optimization. Terms of Service Clean Installation & Complete Reversibility Optimole installs in seconds with a user-friendly onboarding flow and one-click preset configurations tailored for optimal results. Once set up, it quietly runs in the background—continuously optimizing your images without any extra work from your side. Changed your mind? No problem. Optimole offers a clean uninstall process that restores your site to its original state—no leftover code, no clutter in your database. Ready to Scale? Go Pro Premium plans start from support for 40,000 monthly visits and scale up to 3 million visits. Need even more? We’re happy to help with custom plans tailored to your needs. All images are delivered via AWS CloudFront, using a global network of 450+ edge locations for lightning-fast load times, anywhere in the world. Pro is ideal for photographers, agencies, and businesses managing large volumes of photos online. As a Pro user, you’ll get priority support and the option to use a custom CNAME—so your image URLs reflect your brand while being served at top speed. Get Optimole Pro. What Our Users Say About Optimole Made a 50% speed difference This is a brilliant plugin that I used to replace Nitro, which unaccountably lowered my loading speed massively after a site restore. It does the job and plays nicely with other plugins so far as I can tell. 🧑‍💻 JS Wilkins, Website Owner Better Than Any Other Image Plugin Increased my site speed as any other image plugin did not in the past! Performance for mobile reached 94 in (Lighthouse) without tuning anything else in my site. 🧑‍💻 Domingosanna, Website Owner Great Performance, Support & Savings Beautiful product. Works great. Nice design. Excellent customer support. Saving a ton on hosting costs by going this route. happy happy joy joy. 🧑‍💻 Alex Williams, Business Owner Support We’re here to help. Feel free to open a new thread on the Support Forum. Documentation Discover how to make the most of Optimole with our detailed and user-friendly documentation.