webwonderland

Web Wonderland SEO Image Optimiser helps you improve image performance and accessibility without breaking your theme.
The plugin can:
<ul>
<li>Convert images to modern formats (WebP/AVIF)</li>
<li>Serve WebP automatically on the front-end</li>
<li>Generate <code><picture></code> markup for improved Core Web Vitals</li>
<li>(Optional) Generate AI-based captions, alt text and titles in the same language as the WordPress site language</li>
<li>Integrate with Gutenberg, classic themes, Elementor, WPBakery, etc.</li>
<li>Use server-level rewriting or markup-based delivery modes</li>
<li>Restore original images at any time</li>
</ul>
This is a third-party plugin developed by Web Wonderland. 
It is not affiliated with or endorsed by WordPress, Elementor or WPBakery.
<h3>Local vs Cloud processing</h3>
The optimiser can work in two ways:
Local processing (always available) 
Runs entirely on your own server.
<ul>
<li>Unlimited WebP and AVIF generation (subject to your servers capabilities)</li>
<li>No monthly conversion caps</li>
<li>No api key required</li>
<li>Uses your own CPU and disk I/O</li>
</ul>
Cloud/API processing (api key required) 
Offloads heavy image work to the Web Wonderland Image API.
<ul>
<li>Uses a remote worker to generate WebP/AVIF for originals and all sizes</li>
<li>Reduces CPU load on your hosting, useful for busy or shared servers</li>
<li>Quotas and limits depend on your Lite, Pro or Unlimited plan</li>
<li>Works alongside local mode you can always fall back to local processing</li>
</ul>
You can choose your preferred processing mode in SEO Image Optimiser – Settings.
<h3>Free (Lite API Key)</h3>
The Lite API Key requires no card, only an email to issue an API key.
Included in the Lite API Key plan:
<ul>
<li>Unlimited local image conversions (WebP/AVIF) on your own server</li>
<li>Up to 50 cloud/API image conversions per month (WebP + AVIF) via the Web Wonderland Image API</li>
<li>Front-end WebP & AVIF delivery if available</li>
<li>Up to 30 AI alt tag & title generations per month</li>
<li>Automatic backups of originals with one-click restore</li>
<li>Works on one WordPress site</li>
</ul>
Your previously converted images remain on your server regardless of the API Key status. 
If your monthly cloud API quota is reached, the plugin can still optimise images locally.
<h3>Pro API Key</h3>
For busy sites and image-heavy blogs.
Includes everything in Lite plus:
<ul>
<li>Unlimited local image conversions (WebP/AVIF)</li>
<li>Effectively unlimited cloud/API image conversions for most sites 
(high cap WebP & AVIF generation via the Web Wonderland Image API)</li>
<li>Up to 3,000 AI alt tag & title generations per month</li>
<li>Background processing & bulk optimisation</li>
<li>Can be used on up to 5 WordPress sites</li>
</ul>
<h3>Unlimited API Key</h3>
For agencies or users managing many sites.
Includes everything in Pro plus:
<ul>
<li>Unlimited sites</li>
<li>Unlimited local image conversions (WebP/AVIF)</li>
<li>Unlimited cloud/API image conversions (WebP & AVIF for every image)</li>
<li>Up to 10,000 AI alt tag & title generations per month</li>
<li>Background processing & bulk optimisation</li>
</ul>
<h3>AI & Privacy</h3>
AI captioning is optional. If enabled, SmartAlt uses external services as documented in the External services section below. The plugin does not send personal data about site visitors.
<h3>External services</h3>
This plugin can connect to external services operated by Web Wonderland to provide optional “cloud” features (remote image optimisation and AI-powered SmartAlt captions). Local-only optimisation features continue to work without any external service.
When any cloud feature is enabled/used, the plugin sends requests from your WordPress server (admin-side actions) to the endpoints below. The plugin does not send personal data about site visitors.
<h4>1) Web Wonderland Image Optimisation API (Remote conversions)</h4>
Service: Web Wonderland Image Optimisation API 
Domain: imageapi.webwonderland.co.uk 
Used for: Cloud/remote image conversions (WebP/AVIF generation) and job completion signalling.
Endpoints used: 
– https://imageapi.webwonderland.co.uk/v1/jobs (create remote jobs) 
– https://imageapi.webwonderland.co.uk/v1/jobs/{job_id}/complete (mark job completed)
Data sent: 
– API key (sent as a request header) 
– attachment ID and public image URL (or secure URL) for the image being processed 
– derived image sizes and output settings (format, quality, width/height) 
– plugin version and basic site identifier (e.g. domain) where needed for returning results
When sent: 
– Only when you enable Cloud/API processing and run optimisation from the plugin dashboard / bulk optimiser. 
– The “/complete” request is sent after the plugin has successfully downloaded and stored the processed files.
Terms: https://www.webwonderland.co.uk/wwsio-terms/ 
Privacy: https://www.webwonderland.co.uk/wwsio-privacy-policy/
<h4>2) Web Wonderland Cloud Services (Netlify-hosted endpoints)</h4>
Service: Web Wonderland Cloud Services endpoints (Netlify) 
Domain: stupendous-pie-54cb74.netlify.app 
Used for: Site connect/disconnect, cloud api usage metering, background job coordination, and SmartAlt caption proxy.
Endpoints used: 
– https://stupendous-pie-54cb74.netlify.app/api/sio/connect 
– https://stupendous-pie-54cb74.netlify.app/api/sio/disconnect 
– https://stupendous-pie-54cb74.netlify.app/api/sio/check-reserve 
– https://stupendous-pie-54cb74.netlify.app/api/sio/cron-sites 
– https://stupendous-pie-54cb74.netlify.app/.netlify/functions/sio-smartalt-caption
Data sent: 
– API key (Authorization: Bearer or X-API-Key header, depending on endpoint) 
– plugin version 
– site identifier (e.g. domain) and/or anonymous instance ID 
– for SmartAlt caption generation: the image URL or a data URI for the selected image, and a small request payload (e.g. “usage” mode)
When sent: 
– Connect/disconnect: when you add or remove an API key in the Cloud Services screen. 
– Metering: when cloud processing runs or when SmartAlt is used. 
– Cron coordination: when the plugin is activated and when the optimisation queue state changes. 
– SmartAlt caption proxy: only when you click generate caption / suggestions in the SmartAlt admin screen.
Terms: https://www.webwonderland.co.uk/wwsio-terms/ 
Privacy: https://www.webwonderland.co.uk/wwsio-privacy-policy/
<h4>3) Replicate (AI provider used by Web Wonderland Cloud)</h4>
Service: Replicate (replicate.com) 
Used for: AI image captioning behind the SmartAlt feature (processed by Web Wonderland Cloud).
Data sent: 
– the image data or image URL required to generate a caption (sent by Web Wonderland Cloud, not directly by your WordPress site)
When sent: 
– only when you use SmartAlt caption generation in the plugin admin.
Terms: https://replicate.com/terms 
Privacy: https://replicate.com/privacy

Web Wonderland SEO Image Optimiser

Convert images to WebP and AVIF, add picture markup, and optionally generate SEO alt text & titles using AI. Fast, safe, and theme-friendly.

lessflux

LessFlux is an external image and video optimization plugin for WordPress that helps reduce media file sizes, improve delivery performance, and offload optimization workloads from your hosting environment.
Unlike traditional optimization plugins that process files directly on your server, LessFlux performs all optimization tasks externally. Images and videos are compressed, converted, and delivered through LessFlux infrastructure, helping reduce CPU usage, memory consumption, and long-running optimization jobs on your WordPress installation.
Whether you’re running a personal website, WooCommerce store, agency portfolio, membership site, or content-heavy publication, LessFlux helps streamline media optimization while keeping your WordPress environment lightweight.
<h4>How LessFlux Works</h4>
<ol>
<li>Connect your WordPress site using a Website API Key from your LessFlux account.</li>
<li>Upload images or videos as usual.</li>
<li>LessFlux processes media externally and delivers optimized assets through the CDN.</li>
<li>Existing media can be optimized in bulk using background processing.</li>
<li>Bulk optimization jobs continue running even if you close your browser or leave the page.</li>
</ol>
<h4>Key Features</h4>
<ul>
<li>External image and video optimization</li>
<li>No CPU or memory usage on your WordPress server during processing</li>
<li>Background bulk optimization</li>
<li>Automatic optimization on upload</li>
<li>JPEG and PNG conversion to WebP and AVIF</li>
<li>AVIF recompression support</li>
<li>Video optimization support</li>
<li>Global CDN delivery</li>
<li>Custom CDN CNAME support</li>
<li>Lazy loading support</li>
<li>EXIF metadata preservation</li>
<li>Flexible file replacement options</li>
<li>Support for WordPress-generated image sizes</li>
<li>Bulk optimization for existing media</li>
<li>Website API-based authentication</li>
<li>Activity logs and optimization monitoring</li>
</ul>
<h4>Image Optimization</h4>
LessFlux supports optimization for:
<ul>
<li>JPEG</li>
<li>PNG</li>
<li>GIF</li>
<li>WebP</li>
<li>AVIF</li>
<li>SVG</li>
</ul>
Image optimization features include:
<ul>
<li>Automatic optimization on upload</li>
<li>Lossy compression</li>
<li>WebP conversion</li>
<li>AVIF conversion</li>
<li>Lazy loading</li>
<li>Inline aspect-ratio placeholders for improved layout stability</li>
<li>EXIF metadata preservation</li>
<li>Selectable image formats</li>
<li>Ignored image size rules</li>
<li>Optional image cropping on upload</li>
<li>Original file preservation or replacement</li>
</ul>
<h4>Video Optimization</h4>
Optimize videos directly from WordPress using LessFlux.
Supported formats include:
<ul>
<li>MP4</li>
<li>QuickTime</li>
<li>AVI</li>
<li>WebM</li>
</ul>
Video optimization features include:
<ul>
<li>Automatic video optimization on upload</li>
<li>Adjustable optimization presets</li>
<li>Bulk processing support</li>
<li>Replace or preserve original videos</li>
</ul>
<h4>CDN Delivery</h4>
LessFlux includes CDN integration for faster asset delivery.
<ul>
<li>Global asset delivery</li>
<li>Image delivery through CDN</li>
<li>Video delivery through CDN</li>
<li>CSS delivery through CDN</li>
<li>JavaScript delivery through CDN</li>
<li>Dedicated CDN URL</li>
<li>Custom CNAME support</li>
<li>Cache purge controls</li>
<li>CDN usage visibility within WordPress</li>
</ul>
<h4>External Processing (No Server Load)</h4>
One of the main advantages of LessFlux is that optimization workloads do not run on your WordPress server.
All image and video processing takes place externally, helping avoid:
<ul>
<li>CPU spikes</li>
<li>Memory exhaustion</li>
<li>PHP execution time limits</li>
<li>Long-running optimization tasks</li>
<li>Resource contention on shared hosting environments</li>
</ul>
This approach is especially useful for large media libraries, WooCommerce stores, agency websites, and websites hosted on resource-constrained environments.
<h4>Compatibility</h4>
LessFlux is designed to work alongside standard WordPress media workflows.
Compatible with:
<ul>
<li>WordPress Media Library</li>
<li>WordPress-generated image sizes</li>
<li>Most WordPress themes</li>
<li>Gutenberg</li>
<li>Elementor</li>
<li>WPBakery</li>
<li>Beaver Builder</li>
<li>Bricks Builder</li>
<li>Divi Builder</li>
<li>Oxygen Builder</li>
<li>Breakdance</li>
<li>Most caching and performance plugins</li>
<li>Many other WordPress themes, page builders, and media management plugins</li>
</ul>
LessFlux does not require template modifications and does not alter how WordPress selects image sizes for frontend delivery.
<h4>Who Should Use LessFlux?</h4>
<ul>
<li>WordPress website owners</li>
<li>Agencies managing multiple websites</li>
<li>Developers building performance-focused websites</li>
<li>WooCommerce stores</li>
<li>Content publishers</li>
<li>Membership websites</li>
<li>Media-heavy projects</li>
</ul>
If you want image and video optimization without placing additional load on your hosting environment, LessFlux provides a simple external-first workflow directly inside WordPress.
<h3>External services</h3>
This plugin uses external services provided by LessFlux and third-party CDNs for library delivery.
<ol>
<li>LessFlux API</li>
</ol>
* Service: <code>https://api.lessflux.com/v1/</code> 
* Purpose: account validation, optimization-related operations, dashboard/plugin data exchange. 
* Data sent: plugin requests include site/plugin context and authentication data (such as your LessFlux API token) needed to authorize and process requests. 
* Terms: https://lessflux.com/terms-conditions/ 
* Privacy policy: https://lessflux.com/privacy-policy/
<ol>
<li>LessFlux WordPress endpoint</li>
</ol>
* Service: <code>https://lessflux.com/wp-json/</code> 
* Purpose: plugin integration endpoints used by LessFlux WordPress workflows. 
* Data sent: request metadata required to complete plugin-related actions.
<ol>
<li>Third-party frontend assets</li>
</ol>
* <code>https://fonts.googleapis.com/</code> (font stylesheet, admin UI only)
<ol>
<li>Bundled third-party libraries (MIT licensed, included locally)</li>
</ol>
* lazysizes v5.3.2 – https://github.com/aFarkas/lazysizes (lazy loading) 
* lottie-web v5.10.2 – https://github.com/airbnb/lottie-web (animations, admin UI only) 
* DataTables v2.3.1 – https://datatables.net (data tables, admin UI only) 
* DataTables Responsive v3.0.4 – https://datatables.net/extensions/responsive (admin UI only)

LessFlux Image & Video Optimizer – WebP, AVIF, CDN & Lazy Load

LessFlux optimizes WordPress images and videos externally, reducing server load with compression, modern formats, and CDN delivery.

Web Wonderland SEO Image Optimiser vs LessFlux Image & Video Optimizer – WebP, AVIF, CDN & Lazy Load