DietPress puts your WordPress on a diet and speeds it up. It pairs a complete set of performance optimizations (the ones that used to ship in “Zero Config Performance Optimization”) with a clean, risk-based interface to disable the WordPress features you do not use. Everything is configurable, and the performance optimizations are already on by default, so you can simply activate and enjoy a faster site, or fine-tune every detail.

Coming from “Zero Config Performance Optimization”? This is the same plugin, now called DietPress and fully configurable. All your previous optimizations stay active by default; you just gained a settings page and a whole new set of WordPress-diet options.

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.

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, 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

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
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

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.)
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

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 <link rel="preload" ... fetchpriority="high"> pointing to your logo
Critical CSS: view source and look for <style id="core-diet-critical-css"> 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.

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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.