NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization vs DietPress

Speed up your WordPress site, achieve a 90+ Performance score on PageSpeed Insights, and pass your Core Web Vitals with NitroPack. Boost your website’s speed effortlessly with NitroPack, the ultimate solution trusted by hundreds of thousands worldwide to climb Google rankings, boost conversions, and expand businesses. NitroPack stands above traditional caching with its cloud-based infrastructure and advanced optimizations, delivering top scores on Core Web Vitals and Lighthouse tests. This ensures a seamless, fast experience for your visitors. Experience unmatched performance with features like cutting-edge caching, full image optimization, code optimization, an integrated global CDN, and lazy loading. NitroPack is your all-in-one tool for a lightning-fast website that captivates visitors and drives conversions. Why choose NitroPack? Instant Performance Boost Without Coding: NitroPack delivers a significant website speed and performance boost instantly, eliminating the need for complex coding or technical expertise. Enjoy faster page load speed, improved page speed scores, and better user experience effortlessly. Automated Optimization for Core Web Vitals: NitroPack automates the optimization of Core Web Vitals, ensuring your website consistently meets and exceeds the page experience metrics that impact user experience, SEO, and search engine rankings. Learn more about how we can help you boost your Core Web Vitals scores with our latest webinars with Google. Optimizations with Zero Impact on Your Hosting’s CPU and RAM: NitroPack handles all resource-intensive performance optimization tasks, including caching, image optimization, and file minification, on its own servers. This preserves your hosting resources while improving website speed and page performance without putting strain on your server’s CPU or RAM. An additional customer-centric approach safeguards your site’s performance and stability by working on copies of your files, meaning your original content stays unchanged. With NitroPack, you can optimize page speed and user experience confidently, knowing your website’s integrity is protected. Speed up your site with NitroPack ✅ What’s included in the Free plan? NitroPack’s Free plan* is recommended for small websites and testing website speed optimization. Install it on up to 1 website (no CC required) and experience the powerful performance and cache optimizations we offer firsthand before committing to our paid subscriptions, starting at $7/mo. With up to 1,000 pageviews and 1GB of CDN bandwidth included monthly, you can leverage over 35 of NitroPack’s speed optimization features across Caching, Image and Media, JavaScript, HTML and CSS, and Fonts. Within seconds of installation, NitroPack applies the following features automatically to boost page speed, improve site speed, and fix common WordPress performance issues: Caching: Minify Resources, Ignored parameters, Cache Reset, Excluded resources, Excluded URLs, Dynamic content cookies, Advanced caching, Smart cache invalidation, Light Purge, Device-aware caching, Integration with 3rd-party cache, Cache Warmup Image and Media: Lazy load images, Lazy load iframes, Video facades, Lossless and Lossy Image Optimization, WebP Conversion, Preemptive Image Sizing, Lazy loading of background images JavaScript: Remove render-blocking resources, JS Minification, Third-party Scripts Optimization HTML and CSS: Keep HTML comments, HTML normalization, Generate critical CSS, Custom CSS, Combine CSS, CSS Minification, Advanced CSS Management, Advanced Resource Loader, HTML Minification, Page prefetching and prerendering Fonts: Override Font Rendering Behavior CDN: Static Content Caching, GZIP and Brotli Compression, HTTP/3 Compatibility. For questions and technical assistance, customers on the free plan can rely on our 24/7 ticketing support system. What makes NitroPack the ultimate speed optimizer? 💾 ADVANCED CACHING: Thanks to its advanced features and smart caching system, NitroPack ensures fast and stable website performance, even during traffic spikes. Automatic Cache Warmup: Preloads cached pages to ensure fast delivery from the first visit Smart Cache Invalidation: Keeps cached content fresh without unnecessary cache resets Device- and Cookie-Aware Caching: Delivers optimized cache versions for different devices and users for a tailored and fast user experience. Browser Cache: Improves load speed for returning visitors by leveraging the built-in browser cache 🖼️ IMAGE OPTIMIZATION: NitroPack eliminates manual image optimization by automatically reducing image size by up to 7x while preserving quality, dramatically improving page speed and user experience. Automatic Image Optimization: Dynamically resizes images, converts them to WebP format, and applies the best compression technique to reduce file sizes without sacrificing quality Adaptive Image Sizing: Optimizes images to perfectly fit their display containers across devices for an enhanced user experience Advanced Lazy Loading: Improves page load speed by loading offscreen images and videos (including GIFs, YouTube, Vimeo, and Wistia) only when needed 🌐 BUILT-IN GLOBAL CDN: NitroPack includes a global Content Delivery Network (CDN) powered by Cloudflare, delivering content from hundreds of servers across 120+ countries. Ultra-fast CDN delivery for static and dynamic content, regardless of your users’ location GZIP & Brotli compression for faster data transfer HTTP/3 support for modern, high-performance connections 🛠️ CODE OPTIMIZATION: NitroPack’s code optimization engine improves page speed and performance by optimizing HTML, CSS, and JavaScript automatically. Advanced Resource Loader for intelligent management of resource loading without the need for technical intervention Critical CSS optimization that prioritizes above-the-fold CSS for rapid page rendering, making your site appear faster to users Deferred JavaScript loading for improved page responsiveness CSS & JS combining and minification for improved loading efficiency, reduced HTTP requests, and faster overall site speed. HTML compression and DNS preconnects reduce the time it takes to fetch external resources ✏️ FONT OPTIMIZATION: Improve website speed by optimizing web fonts by over 60%, including Google Fonts, without sacrificing design. Font subsetting to remove unused glyphs on the page Deferred font loading for better page experience Font compression (WOFF2) to reduce font file size by up to 50% Google Fonts optimization via hosting them on our CDN To view a complete list of NitroPack’s features, visit the feature page. ☎️ 24/7 SUPPORT: All NitroPack customers receive expert live chat support and access to an extensive knowledge base for site speed, performance, and cache-related issues. 🔒 SECURITY AND COMPLIANCE: Your safety is our priority. NitroPack is SOC2 Type 2 compliant and ISO 27001 certified, internationally recognized standards for managing information security. We have a devoted team of security specialists working around the clock to uphold the highest level of security and compliance. By implementing industry-leading practices, we ensure your data remains secure and your peace of mind intact, while optimizing website performance. 🔌 COMPATIBILITIES: NitroPack integrates seamlessly with the most popular WordPress plugins and themes to provide a smooth user experience: Plugins: WooCommerce Elementor Divi Builder Yoast SEO Squirrly SEO All in One SEO Pack Rank Math SEO Contact Form 7 WPML Cloudflare WPForms Gravity Forms WPBakery Beaver Builder Fusion Page Builder Thrive Architect HubSpot All-in-one WP Migration OptinMonster Drift Chat LiveChat Tawk.to Chat ShortPixel GeoTargeting WP Mediavine MainWP And more Themes: Astra OceanWP Neve GeneratePress Avada BeTheme Divi X Enfold Sena Jupiter Thrive Davenport And more SHARE THE NITRO 💜 Join our Facebook Community. Learn from our tutorials on YouTube Channel. Contribute to NitroPack’s translations Or rate us on WordPress 🙂 *The Free plan includes a small NitroPack badge in the footer to show visitors the website runs on top-tier performance optimization tech.

DietPress is a free WordPress speed optimization plugin with a built-in page cache. Page caching, browser caching, GZIP and Brotli compression, deferred JavaScript, critical CSS, image loading attributes, preloading, locally hosted Google Fonts and selective asset loading, all in one plugin and all free. And it goes further than a caching plugin: it also puts WordPress itself on a diet, switching off the features your site never uses. It pairs that with a clean, risk-based interface. Everything is configurable, the optimizations are already on by default, and nothing is hidden behind a paid tier. Activate it and your site is faster, or open the settings and tune every detail. By default WordPress loads functions, services and scripts that most sites do not need. They slow down loading times and consume hosting resources. DietPress lets you trim that fat and apply battle-tested performance tweaks, with a clear description of what each option does and what might break, organized by risk level so you always know what is safe. WHY CHOOSE DIETPRESS Page caching, for free. Serve anonymous visitors a copy stored on disk instead of building the page again. The feature people buy WP Rocket or a NitroPack subscription for, with no licence and no monthly fee. No drop-in, no changes to wp-config.php. Unlike WP Super Cache or W3 Total Cache, DietPress installs no advanced-cache.php and never edits wp-config.php. Switching it off leaves your site exactly as it was, with nothing orphaned behind. It tells you why. Most cache plugins leave you guessing when nothing is cached. DietPress reports its own status, tests itself against your home page, and names the exact reason a page was skipped. WooCommerce-safe by design. Carts, checkout, my account and any visitor carrying a cart cookie always get the live site, so nobody ever sees somebody else’s basket. Diet as well as speed. Where Perfmatters focuses on disabling scripts, DietPress covers that ground and adds page caching, critical CSS, local Google Fonts and a dashboard, admin and email cleanup, in one plugin. Light on your server. No account, no external service, no telemetry, no upsell nags. Everything runs on your own hosting. WHAT THE PAGE CACHE DOES TO YOUR RESPONSE TIME Measured on a WordPress 7.0 install with GeneratePress, WooCommerce and a 76 product catalogue, PHP 8.5, taking the median of 15 requests per URL. Your own hosting will give different figures, but the shape of the result will not change. Server response time, the same pages with the page cache off and on: Home page – 52.7 ms without, 15.1 ms with, 71% faster WooCommerce shop – 45.4 ms without, 14.8 ms with, 67% faster A 110 KB article – 43.0 ms without, 15.1 ms with, 65% faster A 98 KB page – 41.0 ms without, 14.9 ms with, 64% faster A product category – 41.3 ms without, 15.1 ms with, 63% faster The interesting part is not the percentage, it is that the cached figure barely moves. Serving a stored file costs the same whether the page was cheap or expensive to build, so the saving grows with the size of your site rather than with the power of your server. The heaviest page in the test is the one that gained most. It also changes how much traffic your hosting can take at once. In the same test the server went from serving about 40 visits a second to more than 210, five times as many, on exactly the same plan. That is what keeps a small site standing up when one of your posts does well. TWO THINGS IN ONE PLUGIN 1. Performance optimizations (on by default) Automatic Critical CSS inlined in the head (optional experimental deferral of non-critical CSS) JavaScript defer parsing with smart dependency handling Image loading attributes safety net: lazy loading, decoding=async and fetchpriority for images that bypass core Automatic image dimensions for better CLS scores (including picture elements) Resource hints: preconnect and DNS prefetch for common third-party origins Theme stylesheet, critical fonts and logo preloading for a faster LCP Google Fonts display=swap Google Fonts local hosting: serve the fonts your theme uses from your own server, GDPR-friendly with a silent fallback to the Google CDN (opt-in) Selective third-party loading: WooCommerce, Contact Form 7, block library, Slider Revolution, TablePress, Smash Balloon, Formidable Forms and Everest Forms assets only load where they are used (opt-in) RSS feed optimization (cache headers and item limit) Server rules in .htaccess: browser caching with a configurable lifetime for media, for styles and scripts and for fonts, GZIP and Brotli compression, immutable cache headers, CORS for fonts and keep-alive (master switch plus per-feature toggles) Database maintenance: daily expired-transient cleanup and safe query optimizations Page cache: store each page on disk and serve it to anonymous visitors without building it again, with automatic purging, gzip precompression and a status panel that says whether it is working (opt-in, in its own tab) 2. Put WordPress on a diet (risk-based, opt-in) Light (safe for any site): emojis, RSD/WLW tags, shortlinks, self-pingbacks, comment pagination, and more Moderate (evaluate first): oEmbed, jQuery Migrate, Dashicons on the frontend, Global Styles and Duotone, remote block patterns, avatars and Gravatar, comment threading, and more Strict (site-specific): granular RSS feed control, Heartbeat API mode, post revisions and autosave, disable comments, XML sitemap, native lazy loading/fetchpriority, content types, selective loading for WooCommerce, Contact Form 7, block assets, Slider Revolution, TablePress, Smash Balloon, Formidable Forms and Everest Forms, and more Widgets: dashboard widgets (including third-party ones from Yoast, WooCommerce, Elementor, Jetpack, Wordfence, Rank Math, Gravity Forms), classic sidebar widgets, block-editor widgets and the Customizer Emails: silence the automatic emails WordPress sends on its own, grouped by area: auto-update results for core, plugins and themes (plus the new-version notice), comment moderation and new-comment notices, and new user, password and email-change notices, plus toggles for the admin email verification prompt and post-by-email. Every option is off by default, and critical notices such as a failed core update are always kept SCALE, PROFILES AND ANALYZER Savings indicator: HTTP requests removed, CSS/JS saved and active optimizations at a glance Quick profiles: Personal Blog, WooCommerce Store, Landing Page and Maximum Cleanup Site analyzer: personalized recommendations based on your active plugins and content, page cache included Import and export your whole configuration as a JSON file COMPATIBILITY AND EXTENSIBILITY The plugin includes filters for developers: dietpress_critical_css – Customize the inline critical CSS dietpress_critical_css_handles – Define which CSS handles are critical dietpress_skip_defer_script_handles – Opt scripts out of the JavaScript defer dietpress_skip_defer_style_handles – Opt stylesheets out of the CSS deferral dietpress_preconnect_hints – Customize preconnect origins dietpress_dns_prefetch_domains – Customize DNS prefetch domains dietpress_critical_fonts – Define critical fonts to preload dietpress_exclude_local_fonts – Exclude Google Fonts stylesheets from local hosting dietpress_selective_{module}_has_content – Mark a page as showing the content of a selective loading module, so its assets are kept. The module is wc, cf7, formidable, everest_forms or revslider dietpress_selective_{module}_styles / dietpress_selective_{module}_scripts – Adjust the handles removed by each module dietpress_selective_page_hides_content – Mark a page as rendering content the content scan cannot reach, so no module removes anything (this is what handles Elementor) dietpress_selective_is_wc_page – Override the WooCommerce page detection of selective loading dietpress_selective_wc_keep_cart_fragments – Keep the cart fragments script when your theme has a hand-coded mini-cart dietpress_selective_cf7_has_form – Mark pages that load a Contact Form 7 form dynamically dietpress_selective_blocks_dequeue – Override the block library dequeue decision dietpress_selective_everest_forms_dequeue_dashicons – Keep Dashicons when another plugin enqueues it directly dietpress_native_sitemap_in_use – Tell DietPress your plugin builds on the native WordPress sitemap, so the option that removes it becomes unavailable dietpress_cache_bypass – Keep the current page out of the page cache dietpress_cache_bypass_cookies – Adjust the cookie name prefixes that make a visitor uncacheable dietpress_cache_ignored_params – Adjust the query parameters that do not change the page dietpress_cache_exclude_urls – Adjust the excluded URL patterns dietpress_cache_post_urls – Adjust the URLs purged along with a post Compatible with: Well-coded themes and page builders (Divi, Elementor, Beaver Builder, Bricks Gutenberg) Cache plugins (WP Rocket, LiteSpeed Cache, W3 Total Cache, WP Super Cache, etc.). The one exception is the optional page cache module, which will not run beside another page cache and says so; everything else in DietPress works alongside them as it always has Security plugins (DietPress focuses on performance and deliberately leaves security to them; we recommend our free Vigilant) CDNs (Cloudflare, StackPath, KeyCDN, etc.) thanks to CORS and Vary headers WordPress Multisite (except the optional page cache module, which does not support it yet) HOW TO VERIFY THE OPTIMIZATIONS Cache rules: check your .htaccess for a block marked # BEGIN DietPress with immutable Cache-Control headers Logo preload: view page source and look for pointing to your logo Critical CSS: view source and look for in the head Compression: test at giftofspeed.com/gzip-test Always measure with tools like Google PageSpeed, GTMetrix or WebPageTest, and run each test at least twice to account for caching. Support Need private support or custom development? Do you need one-on-one help, priority troubleshooting, or a custom feature, integration, or tweak built specifically for your site? I offer private support and custom development. Just contact me and tell me what you need. Need help or have suggestions? Official website WordPress support forum YouTube channel Documentation and tutorials Love the plugin? Please leave us a 5-star review and help spread the word! About AyudaWP We are specialists in WordPress security, SEO, AI and performance optimization plugins. We create tools that solve real problems for WordPress site owners while maintaining the highest coding standards and accessibility requirements.