AI Featured image vs Smush – Image Optimization, Compression, Lazy Load, WebP & CDN

AI Featured Image Generator creates AI-powered featured images right from the WordPress editor. Click “Generate Featured Image” on any post and the plugin builds a unique image from your post title, chosen style, and optional custom prompt, using OpenAI, Stability AI, or Grok/xAI on the free plan, or Google Gemini on Pro. Every image gets alt text automatically and an SEO-friendly filename based on your post title. Generate one at a time in the editor, in bulk, straight from the Posts list, or inline in your content with the AI Image Generator block. Everything is managed from one settings hub. Video Walkthrough Free Features 3 free AI providers: OpenAI, Stability AI, and Grok/xAI (Google Gemini available on Pro) OpenAI models: GPT Image 2 (newest, default): excels at text rendering in multiple languages, visual reasoning, multi-object scenes, transparent backgrounds, mask-based editing, and up to 4K output. Also GPT Image 1.5, GPT Image 1, and GPT Image 1 Mini (budget-friendly) Stability AI: Stable Image Core with 16 native style presets (Photographic, Cinematic, Anime, Digital Art, Comic Book, Fantasy Art, and more) Grok/xAI: Grok Imagine Image: fast and affordable at $0.02 per image 13 style presets: Common (None, Realistic, Artistic, Cartoon, Minimalist) and Creative (Sketch, Watercolor, 3D Render, Pixel Art, Cyberpunk, Fantasy, Anime, Technicolor) Custom prompts: plus one-click Generate Prompt from Content, which crafts an AI-optimized prompt from your post title and body (OpenAI and Grok free; Gemini on Pro) 7 image sizes with GPT Image 2: square, portrait, landscape, widescreen 16:9, vertical 9:16, ultra-wide 3:1, and tall banner 1:3 (older OpenAI models support the first three) 3 aspect ratios for Stability AI and Grok: 1:1, 16:9, and 9:16 Output control (OpenAI): WebP/PNG/JPEG format, compression slider (1–100), and Low/Medium/High generation quality Text control: allow or block text, captions, and words in generated images Auto alt text: from the post title, the prompt, or a custom template with {title}, {prompt}, {style}, and {site_name} placeholders. with an option to preserve manual edits on regeneration Bulk Generate: up to 5 posts per batch, 50 images lifetime on the free plan Generate from Post List: an “AI Featured Image” column on the Posts/Pages list with a one-click Generate/Regenerate link, so there is no need to open the editor, and it doesn’t count against the free bulk limit Inline images: the AI Image Generator block adds AI images anywhere in your Gutenberg content, with its own settings tab Multisite compatible Pro Features 🚀 Google Gemini: Nano Banana (Gemini 2.5 Flash), Nano Banana 2 Preview (Gemini 3.1 Flash), and Nano Banana Pro (Gemini 3 Pro): up to 4K resolution and 10 aspect ratios Image upscaling (Stability AI): Conservative (faithful 4x), Creative (AI-enhanced 4K), or Fast (quick 4x), right from the post editor Background removal (Stability AI): one click isolates the subject and saves a transparent PNG as your featured image Advanced Stability AI models: Stable Image Ultra, SD 3.5 Large / Large Turbo / Medium / Flash, SD 3 Large / Large Turbo / Medium, and SDXL 1.0 Negative prompts (Stability AI): exclude unwanted elements, e.g. “blurry, watermark, text, low quality” Grok Imagine Image Pro: higher quality at $0.07 per image, plus 2K resolution More aspect ratios: 9 for Stability AI, 9 for Grok, 10 for Gemini More output formats: PNG/JPEG/WebP for Stability AI, and automatic WebP conversion for Gemini and Grok images Unlimited Bulk Generate: hundreds of posts at once with filters for post type, status, date range, and thumbnail status, plus real-time progress Custom post types: enable generation for any public post type Custom styles: create named styles with your own prompt descriptions, available in every style dropdown Brand Kit: save your brand colors, a style description, tone, and avoid-rules, plus an optional reference image (used by Google Gemini) and a logo watermark, applied automatically to every image you generate, with a per-image “Use Brand Kit” toggle to skip it Want to unlock Google Gemini AI, image upscaling, background removal, unlimited bulk generation and more? Upgrade to Pro here. Requirements WordPress 5.8 or higher PHP 7.4 or higher An API key for at least one provider: OpenAI (free plan) Stability AI (free plan) Grok/xAI (free plan) Google Gemini (Pro only) External Services This plugin connects to your chosen AI provider’s API to generate images. For every provider: Your post title and content (or your custom prompt, and for Stability AI any negative prompt) are sent to the provider’s API when you generate an image Your API key for that provider authenticates each request Requests are only sent when you trigger generation: from the post editor, the Posts list, Bulk Generate, or the AI Image Generator block “Generate Prompt from Content” sends your post title and body to the provider’s text API: gpt-4o-mini (OpenAI), grok-3-mini (Grok), or Gemini 2.5 Flash (Gemini, Pro) OpenAI (Free & Pro): image generation and prompt generation. Terms of Service | Privacy Policy | API Documentation Stability AI (Free & Pro): image generation; for Pro users, upscaling and background removal also send your existing featured image file to Stability AI for processing. Terms of Service | Privacy Policy | API Documentation Grok / xAI (Free & Pro): image generation and prompt generation. Terms of Service | Privacy Policy | API Documentation Google Gemini (Pro only): image generation and prompt generation. Terms of Service | Privacy Policy | API Documentation Data usage: generated images are stored in your WordPress media library. No personal data is stored by the providers beyond what’s necessary for API processing. You are responsible for ensuring your content complies with the selected provider’s usage policies.

Compress images, optimize images, and enable image lazy load automatically with the powerful Smush image optimizer to keep your WordPress site fast, without losing quality. Smush makes it easy to optimize images, compress images, and deliver images faster across your entire WordPress site. This all-in-one image optimizer automatically reduces image file sizes, enables image lazy load, and serves modern formats like WebP and AVIF, all without breaking image quality or adding extra work. Whether you’re running a blog, store, or portfolio, Smush helps you optimize images at scale and keep your site fast with a trusted WordPress image optimizer. Trusted by 1+ Million Sites | 4.8/5 Star Rating Get everything you need to optimize images and speed up your site. Smush works out of the box with no complicated setup – just install and let it handle the rest. Compress images without losing quality Reduce image file size automatically while keeping your images sharp and clear. Smush is an easy-to-use image optimizer which let’s you compress images using both lossless and lossy compression, giving you the best balance of quality and performance without extra work. You can also compress images outside the media library using Directory Smush, making it easy to optimize images stored in theme folders, plugins, or other directories on your server. Lazy load images for faster pages Enable image lazy load across your site so images load only when needed. This image optimizer improves initial page speed and creates a smoother experience for visitors without extra configuration. Serve WebP and AVIF images automatically (PRO) Convert images to WebP and AVIF and serve them automatically to supported browsers. Smush helps you optimize images using next-gen formats to reduce file size and improve load times across your WordPress site. Deliver images faster with an Image CDN (PRO) Serve images through a global image CDN to reduce latency and improve load times for visitors around the world. 119 global CDN servers Up to 500 GB of bandwidth Faster image delivery based on visitor location Improved performance for image-heavy and high-traffic sites Automatically resize and fix image dimensions (PRO) Eliminate common PageSpeed warnings and improve layout stability with automatic image sizing. Smush dynamically resizes images to perfectly fit their containers, regardless of original size, helping fix the “Properly size images” warning in Google PageSpeed Insights. It also automatically adds missing width and height attributes to your images, improving rendering speed and reducing layout shifts. This helps you meet the “Ensure images have explicit width and height” recommendation without any manual work. Optimize your entire site, automatically Smush works across your whole site as a powerful image optimizer to optimize images as you upload them and maintain performance over time without manual work. Optimize images automatically on upload Compress images in bulk or individually Works with your existing media library No need to re-upload images Enable image lazy load across your site Convert images to WebP and AVIF Deliver images with an integrated image CDN Automatically resize and serve correctly sized images Optimize images outside the media library with Directory Smush Built for performance Smush improves page speed and overall performance by reducing image weight and improving how images are delivered. Reduce page load times Improve user experience Better performance for image-heavy pages Supports image lazy load and preload images (PRO) for faster perceived performance Works with your existing setup Smush is built to work with your current WordPress setup, including popular themes, page builders, and plugins. Compatible with Gutenberg, Elementor, WPBakery, and more Works with WooCommerce stores No need to change your workflow Easy to enable and configure Designed to be simple You don’t need to be a performance expert to optimize images with Smush image optimizer. Works out of the box Simple settings when you need them No technical knowledge required Safe to use on any site Why choose Smush? There are plenty of image optimization plugins, but Smush focuses on making it easy to optimize images, compress images, and improve performance without complexity. As a leading WordPress image optimizer, Smush gives you powerful optimization tools without the technical hassle. Trusted by over 1 million WordPress users Built specifically for WordPress Regular updates and improvements Backed by the WPMU DEV team Get started in minutes Install Smush, activate it, and start to compress images, optimize images, and enable image lazy load right away. This easy-to-use image optimizer helps most sites see improvements immediately without changing how they upload or manage images. About Us WPMU DEV is a premium supplier of quality WordPress plugins, services and support. Learn more here: https://wpmudev.com/ Don’t forget to stay up to date on everything WordPress from the Internet’s number one resource: WPMU DEV Blog Hey, one more thing… we hope you enjoy our free offerings as much as we’ve loved making them for you! Contact and Credits Originally written by Alex Dunae at Dialect (dialect.ca, e-mail ‘alex’ at ‘dialect dot ca’), 2008-11.