Tempaloo

The pricing problem with most WebP plugins
WordPress generates 5-8 thumbnails for every image you upload (<code>thumbnail</code>, <code>medium</code>, <code>medium_large</code>, <code>large</code>, <code>full</code>, plus theme-specific sizes). Most popular optimizers count each thumbnail as a separate credit, so a single product photo or blog hero can burn through 6-8 credits before you’ve touched your second image.
Tempaloo charges 1 credit per upload, no matter how many sizes WordPress derives from it. Same quota, 6-8x more usable conversions.
Concrete comparison — 1,000 uploads / month
<ul>
<li>ShortPixel / Imagify (per-thumbnail billing): 6,000 to 8,000 credits consumed → you need a 10k or 20k plan.</li>
<li>Tempaloo (per-upload billing): 1,000 credits consumed → our 5,000-image Starter plan covers you 5x over.</li>
</ul>
If your site averages 4+ thumbnails per upload (which it does, by default), Tempaloo is the lowest cost-per-converted-image on the market.
Built for
<ul>
<li>Agencies managing 10–100 client sites tired of credit math and license-per-site upcharges (our Growth plan covers 5 sites; Business covers unlimited).</li>
<li>WooCommerce stores with 50+ photos per product who blow through ShortPixel quotas in days.</li>
<li>Photographers, portfolios, magazines who want AVIF + high quality without the Imagify Pro tier.</li>
</ul>
What’s in version 1.0
<ul>
<li>Async upload pipeline — conversion runs in a fresh PHP process via non-blocking loopback, so your uploads finish instantly and we never fight other plugins on the same WordPress filter chain (security scanners, page builders, other optimizers). Most optimizers convert sync inline; that’s where conflicts come from.</li>
<li>Bulk converter with adaptive backoff, pause/resume, and live progress (current image, savings counter, ETA).</li>
<li>Diagnostic + reconcile tab — drift detection across filesystem, attachment metadata, bulk state, and retry queue. One click to repair desynchronized state. Most optimizers leave this to the user; we audit it.</li>
<li>AVIF on every paid tier — not a Pro-only add-on. Starter (5€/mo) already includes it.</li>
<li>WP-CLI — <code>wp tempaloo status / activate / bulk / restore / quota</code>. First-class deploy story for managed WordPress hosts.</li>
<li>Picture-tag and URL-rewrite delivery modes — picture-tag works with Gutenberg, Elementor, Bricks, Divi, Beaver Builder, WooCommerce, and any theme. URL rewrite stays out of your markup. CDN passthrough also supported.</li>
<li>Compatibility hardening — atomic temp+rename writes, explicit <code>nocache_headers()</code> + <code>DONOTCACHEPAGE</code> so LiteSpeed Cache, WP Rocket, and W3 Total Cache never serve stale admin data.</li>
<li>Developer hooks — three filters/actions to skip attachments, override quality, and react after conversion. See “Developer hooks” below.</li>
</ul>
Pricing
<ul>
<li>Free plan: 250 images / month, 1 site, no credit card required.</li>
<li>Starter (5 €/mo): 5,000 images/month, AVIF included.</li>
<li>Growth (12 €/mo): 25,000 images/month, 5 sites per license.</li>
<li>Business (29 €/mo): 150,000 images/month, unlimited sites.</li>
<li>Unlimited (59 €/mo): fair-use 500k/mo, priority SLA.</li>
</ul>
Paid plans include a 7-day trial and a 30-day money-back guarantee. Credits roll over up to 30 days on paid plans.
Full details at <a href="https://tempaloo.com/webp" rel="nofollow ugc">https://tempaloo.com/webp</a>.
Trademarks
WebP and AVIF are open image formats developed by Google and the Alliance for Open Media respectively. Tempaloo is an independent product and is not affiliated with, endorsed by, or sponsored by Google or the Alliance for Open Media. ShortPixel, Imagify, EWWW, Smush, and Optimole are trademarks of their respective owners and are referenced for comparison purposes only.
<h3>External services</h3>
This plugin connects to the Tempaloo conversion API hosted at <code>https://api.tempaloo.com</code> to:
<ul>
<li>Verify your license key when you activate the plugin.</li>
<li>Convert images to WebP or AVIF — the plugin sends your image files (temporarily, not stored) along with your license key and site URL.</li>
<li>Fetch your current monthly quota.</li>
<li>Receive webhooks from Freemius (our payment processor) for subscription events.</li>
</ul>
What data is sent
<ul>
<li>Your license key (required for authentication).</li>
<li>Your site URL (for license-to-site binding).</li>
<li>The image bytes to be converted (streamed, never persisted on our servers — originals stay on your server).</li>
<li>Your WordPress and plugin version (for compatibility diagnostics).</li>
</ul>
Data retention
<ul>
<li>Image data is held in memory only during conversion, then discarded.</li>
<li>Usage logs (count of conversions, byte totals, duration) are stored for billing and analytics, associated with your license.</li>
<li>No personal data beyond what is needed to authenticate your license: your account email (collected at activation or via Google OAuth) and the URL of the WordPress site where the license is active. Both are necessary for license enforcement and are detailed in our privacy policy at https://tempaloo.com/privacy.</li>
</ul>
Providers
<ul>
<li>Conversion API: Tempaloo (hosted in Frankfurt, EU).
<ul>
<li><a href="https://tempaloo.com/terms" rel="nofollow ugc">Terms of Service</a></li>
<li><a href="https://tempaloo.com/privacy" rel="nofollow ugc">Privacy Policy</a></li>
</ul>
</li>
<li>Payment processing (paid plans only, triggered by clicking “Upgrade”): Freemius, Inc.
<ul>
<li><a href="https://freemius.com/privacy/" rel="nofollow ugc">Freemius Privacy Policy</a></li>
<li><a href="https://freemius.com/terms/" rel="nofollow ugc">Freemius Terms</a></li>
</ul>
</li>
</ul>
By activating this plugin and entering a license key, you agree to Tempaloo’s Terms and Privacy Policy.
<h3>Privacy</h3>
See the External services section above for a full disclosure of the data this plugin sends to the Tempaloo API.
<h3>Developer hooks</h3>
Three hooks let you tailor the plugin’s behavior from your own theme or custom plugin. They fire on both the auto-convert-on-upload path and the bulk path (CLI or admin), so a single rule applies everywhere.
<pre><code>apply_filters( 'tempaloo_webp_skip_attachment', false, $attachment_id, $mode )
</code></pre>
Return <code>true</code> to bypass conversion for a specific attachment. Useful to exclude a folder, a CPT, or images larger than a threshold.
<pre><code>apply_filters( 'tempaloo_webp_quality_for', $quality, $attachment_id, $format )
</code></pre>
Override the quality value (1–100) per attachment. Returned values are clamped to 1–100. Useful to lift quality on portfolio shots or drop it on product thumbnails.
<pre><code>do_action( 'tempaloo_webp_after_convert', $attachment_id, $info )
</code></pre>
Fired after a successful conversion (one or more sizes written). <code>$info</code> contains <code>format</code>, <code>converted</code>, <code>failed</code>, <code>mode</code>, <code>quality</code>, <code>sizes</code>. Useful for CDN purges, custom logging, webhooks, manifest rebuilds.
Example — skip conversion for any attachment in the <code>private/</code> upload subfolder:
<pre><code>add_filter( 'tempaloo_webp_skip_attachment', function( $skip, $id ) {
 $path = get_attached_file( $id );
 return $path && false !== strpos( $path, '/uploads/private/' );
}, 10, 2 );<h3>Source code</h3>
</code></pre>
Tempaloo WebP is open source under the GPLv2 (or later) license. All compiled assets are generated from human-readable sources included in this distribution — no obfuscated or auto-generated code without a matching source.
<h4>Compiled assets</h4>
The admin dashboard UI is built with Vite + React + TailwindCSS. The compiled output (<code>build/admin.js</code> and <code>build/admin.css</code>) is generated from the source files under <code>admin-app/</code>:
<ul>
<li>TypeScript / TSX source: <code>admin-app/src/</code></li>
<li>Build configuration: <code>admin-app/vite.config.ts</code>, <code>admin-app/tsconfig.json</code>, <code>admin-app/tailwind.config.js</code>, <code>admin-app/postcss.config.js</code></li>
<li>Dependency manifest: <code>admin-app/package.json</code> (and <code>admin-app/package-lock.json</code> for reproducible installs)</li>
</ul>
<h4>How to rebuild</h4>
From the plugin root:
<pre><code>cd admin-app
npm install
npm run build
</code></pre>
This regenerates <code>build/admin.js</code> and <code>build/admin.css</code>. Output is deterministic — same source plus same lock file produce the same bytes.
<pre><code>npm run typecheck runs the TypeScript compiler in `--noEmit` mode for a standalone type check.
</code></pre>
<h4>Third-party libraries</h4>
All third-party libraries are pulled in via npm (declared in <code>admin-app/package.json</code>) — none are vendored as pre-built minified files in this repository. Their licenses are MIT and compatible with GPLv2-or-later.
<ul>
<li>React 18 — https://react.dev (MIT)</li>
<li>React DOM 18 — https://react.dev (MIT)</li>
<li>clsx — https://github.com/lukeed/clsx (MIT)</li>
<li>@freemius/checkout — https://github.com/Freemius/checkout (MIT)</li>
<li>TailwindCSS — https://tailwindcss.com (MIT)</li>
<li>Vite — https://vitejs.dev (MIT)</li>
<li>PostCSS — https://postcss.org (MIT)</li>
<li>Autoprefixer — https://github.com/postcss/autoprefixer (MIT)</li>
</ul>

Tempaloo WebP

The image optimizer that doesn't charge you for thumbnails. 1 credit per upload, all sizes included — 6-8x more conversions for the same quota.

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.

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