The Off Switch (formerly WP Avoid Slow) vs DietPress

WordPress prioritises backwards compatibility. That’s a feature. It also means every install ships with things you didn’t ask for. An emoji CDN script. An oEmbed script. A Windows Live Writer manifest (discontinued 2017). Dashicons loaded for logged-out visitors. Heartbeat polling every 15 seconds. A version tag that tells the world exactly which WordPress you’re running. None of these are bugs. They’re just not needed on most sites. Disable what you don’t need. Keep what you do. The Off Switch lets you disable each one, individually. One screen, every switch A live counter shows how many switches are on. A sticky bar keeps Save, the filter, and state chips (All / On / Off / Changed / New) in reach while you scroll. Changed switches are highlighted until you save, and an “unsaved changes” pill shows exactly what you’ve flipped before you commit. Jump between sections with live per-section counts, or copy a WP-CLI command that replicates your whole configuration on another site. Every switch card states what it removes, what it saves, and what to watch out for. All 104 switches were functionally verified against a live WordPress 7.0 install for this release. Bloat Remover Emoji script – ~15 KB + 1 HTTP request. Browsers handle emoji natively. Embed script – ~4 KB + oEmbed discovery links in . RSD link – Really Simple Discovery. Only needed for legacy XML-RPC clients. WLW manifest – Windows Live Writer has been discontinued since 2017. WordPress 6.3 removed this link from core — the switch matters on WordPress 6.2 and older. WP version tag – Stops advertising your WordPress version to the world. Shortlink – Removes from and HTTP headers. Search engines ignore it. Asset query strings – Strips ?ver= from scripts, styles, and WP 6.5+ Script Modules so CDNs and proxies cache correctly. XML-RPC – Closes a common brute-force attack vector. XML-RPC Kill Requests – Goes further than disabling: hard-kills any incoming xmlrpc.php request with a 403 before WordPress loads at all. Heartbeat API – Reduces admin polling from every 15 s to every 60 s. Dashicons (frontend) – ~35 KB (CSS + font) saved for every logged-out visitor. REST API Discovery Link – Removes from . Safe to remove on standard sites. RSS Feed Links – Removes feed autodiscovery tags from . Modern browsers no longer act on them. Leave enabled if you publish an RSS feed. Speculation Rules (WP 6.8+) – Disables the WP 6.8+ Speculation Rules API that prefetches links before users click. Can inflate analytics, increase server bandwidth, and trigger consent flows on unfetched pages. Disable All Feeds – Redirects all RSS and Atom feed URLs to the homepage. For sites with no RSS subscribers. Comment Auto-Links – Stops WordPress from converting plain-text URLs in comments into clickable links. Editor Autosave – Deregisters the autosave script that POSTs editor content to the server every 60 seconds. For teams that prefer explicit saves. DNS Prefetch – Removes all hints from . Redundant when Emojis and Embeds are already disabled. Recent Comments Inline CSS – WordPress outputs a small inline block in whenever the Recent Comments widget is active. Remove it if your theme already styles the widget. Script & Style Control jQuery Migrate – ~30 KB. Modern themes don’t need it. Block Library CSS – ~7 KB loaded on every page, even with no Gutenberg blocks. Global Styles (theme.json CSS) – 10-50 KB inline CSS from block themes. SVG Duotone Filters – Hidden SVG blob injected on every page, even with no duotone images. WordPress 6.3 made duotone output on-demand — the switch matters on WordPress 6.2 and older. Script/Style type attributes – type="text/javascript" and type="text/css" are redundant in HTML5. Defer non-critical JavaScript – Adds defer so scripts don’t block HTML parsing. jQuery is never deferred. Move scripts to footer – Relocates enqueued scripts from to just before . jQuery is never moved. Template Output Buffering (WP 7.0) – Since WordPress 7.0, classic themes get every frontend page buffered in memory in full and re-parsed before a single byte reaches the visitor, so late-printed block styles can be hoisted into . Turning the buffer off restores streamed output for faster TTFB and lower peak memory. Block themes are unaffected. WordPress Behaviour Tweaks Self-pingbacks – WordPress pings your own posts when you link between them – a wasted HTTP request that creates an unwanted comment on the target post. Capital P filter – WordPress corrects “WordPress” to “WordPress” on every rendered string. Remove if you don’t need the autocorrect. Limit post revisions – WordPress stores unlimited revisions per post. Caps revisions at 3 to prevent silent database growth on active editorial sites. Attachment pages – WordPress creates a full template page for every uploaded file. These waste crawl budget on most sites. Sends a 301 redirect to the parent post instead. Comments – Closes all comments and pingbacks site-wide, hides existing comments on the frontend, and removes comment-related UI from wp-admin (Comments menu, admin bar node, dashboard widget). Enable only if your site does not use comments. Search – Redirects all WordPress search queries (/?s=) to the homepage with a 301, preventing bots from triggering repeated database queries. Also removes search forms rendered via get_search_form(). Hardcoded forms in theme templates are not affected. oEmbed Provider – WordPress registers a REST endpoint at /wp-json/oembed/1.0/embed so other sites can embed your content via the oEmbed protocol. Remove it if you don’t want your content embeddable externally. Does not affect your ability to embed others’ content. Post via Email – Removes the Post via Email configuration from Writing Settings and disables the feature. Almost no modern site uses email-to-post. Update Services (Ping-o-Matic) – Removes Update Services from Writing Settings and stops outbound pings to weblog ping services on every published post. Native XML Sitemap (WP 5.5+) – Disables WordPress’s built-in XML sitemap generator. Most sites use external SEO plugins (Yoast, Rank Math) for sitemaps instead. Removes unnecessary redirects and reduces crawl overhead (default OFF). oEmbed Auto-Embed – Disables WordPress from regex-scanning post content for [embed] shortcodes and oEmbed patterns on every frontend page load. For sites that do not embed external content, removing this filter saves processing overhead (default OFF). Database & Query Expired Transients – Schedules a daily cleanup of expired transient rows in wp_options. Useful on low-traffic sites where WP-Cron can go days without firing. Abandoned Auto-Drafts – WordPress creates an auto-draft every time the post editor opens. Abandoned sessions leave these rows permanently. Runs a daily sweep to delete auto-drafts older than 30 days. Skip Row Count on Singles – On every single post or page, MySQL runs SQL_CALC_FOUND_ROWS to count total matching rows – a full index scan only needed for paginated archives. Removes that sub-query on all singular views. Adjacent Post Links – Older WordPress queries the previous and next post on every single post page to output in — two extra DB queries per page load. Google dropped support for these hints in 2019, and modern WordPress no longer outputs them; the switch matters on older installs. Reduce Trash Retention – WordPress keeps trashed items for 30 days before permanent deletion. A daily sweep permanently deletes posts and comments trashed more than 7 days ago, keeping wp_posts leaner on active editorial sites without affecting normal recovery workflows. Image Performance Google Fonts display:swap – Without font-display:swap, the browser hides text while your Google Font downloads (FOIT). Adds display=swap to every Google Fonts URL so visitors see text immediately. Add missing image dimensions – Images without width and height attributes cause layout shifts (CLS). Reads dimensions from attachment metadata and injects them automatically. LCP image priority – Adds fetchpriority="high" to the first content image so the browser loads it before lower-priority resources. Adds fetchpriority="low" and decoding="async" to all others. Lazy load images – Adds loading="lazy" to images below the fold. The first image is never lazy-loaded – it is the LCP candidate and must load immediately. Disable PDF thumbnails – WordPress generates thumbnail previews for every uploaded PDF when ImageMagick is available. Rarely used on the frontend; adds significant upload processing time. Disable scaled images – WordPress 5.3+ creates a downsized -scaled copy of any image whose longest side exceeds 2560 px on upload. On most sites this extra file is never served. Disabling it stores the original as-uploaded. Applies to new uploads only. Disable extra image sizes – WordPress 5.3 added 1536×1536 and 2048×2048 intermediate sizes to every image upload. These oversized copies are rarely requested and waste disk space. Theme and plugin image sizes are not affected. Applies to new uploads only. Security & Admin Hardening Block User Enumeration – WordPress redirects ?author=1 to /author/username/, exposing registered usernames. Intercepts those requests and redirects to the homepage before the username is revealed. Disable Author Archives – Redirects all /author/username/ pages to the homepage. For sites with no author profile pages. Disable File Editor – Defines DISALLOW_FILE_EDIT to remove the plugin and theme code editor from wp-admin. Eliminates a code-injection surface a compromised admin account could exploit. Disable Application Passwords – Removes the Application Passwords UI and stops all tokens from being accepted. For sites that don’t use REST API or XML-RPC integrations. Suppress Admin Email Check – Disables the periodic full-screen prompt asking admins to confirm their email address. One less interruption, no functional change. Remove X-Pingback Header – Strips X-Pingback: from every HTTP response, stopping the site from advertising its XML-RPC endpoint URL to scanners. Clean Admin Bar – Removes the WordPress logo dropdown, the duplicate “Visit Site” link, and the admin bar search for a less cluttered editing environment. Hide Update Nag for Non-Admins – Hides the core update notice from editors and contributors who cannot action it. Administrators still see it normally. Restrict REST API to Logged-In Users – The REST API is publicly accessible by default, allowing unauthenticated enumeration of posts, users, and other data. Restricting access to authenticated users reduces the attack surface. Will break public REST consumers such as headless frontends. Redirect Unauthenticated Admin Access – By default, visiting /wp-admin/ without being logged in redirects to the login page, confirming a WordPress admin area exists. This redirects unauthenticated requests to the homepage instead, reducing information disclosure to scanners. AJAX, Cron, WP-CLI, and admin-post.php requests are never affected. Hide Author Sitemap – WordPress 5.5 added a built-in XML sitemap that includes a users file listing the author archive URL for every user with published posts — up to 2,000 usernames, publicly accessible. Removes the users entry from the sitemap index entirely (WP 5.5+, default ON). Remove X-Redirect-By Header – WordPress 5.1+ adds an X-Redirect-By: WordPress header on every redirect, openly advertising that the site runs WordPress. Removes it from all redirects (default ON). Hide PHP Version Header – PHP sends an X-Powered-By: PHP/x.x.x header on every response, exposing your exact PHP version to every visitor and scanner. Removes it from all responses (default ON). Generic PHP Error Messages – WordPress fatal error messages can include internal file paths and line numbers. Replaces them with a generic response that reveals nothing about server structure (default ON). Hide Admin Bar on Frontend – Removes the WordPress admin toolbar from the public-facing site for all logged-in users. Reduces frontend CSS/JS overhead for logged-in sessions (default OFF). Remove Dashboard Welcome Panel – Removes the “Welcome to WordPress” panel from the dashboard home screen for all users (default OFF). Remove Default Dashboard Widgets – Removes four default dashboard widgets including WordPress Events and News, which makes an outbound HTTP request to api.wordpress.org on every dashboard load (default OFF). Remove Admin Footer Text – Removes the “Thank you for creating with WordPress” text and WordPress version number from the wp-admin footer (default OFF). Disable REST Users Endpoint – WordPress’s REST API exposes /wp-json/wp/v2/users publicly, returning usernames and slugs for all users with published posts. Removes this endpoint for unauthenticated requests only — Gutenberg and plugins that need it while logged in are unaffected (default ON). Disable Email Change Notifications – WordPress sends emails to users when their email address or password changes. On agency-managed sites these are noise. Suppresses both notification types (default OFF). Disable Auto-Update Emails – WordPress emails after every automatic core, plugin (WP 5.5+), and theme (WP 5.5+) update. On sites where auto-updates are routine these arrive constantly (default OFF). Auto-Update Emails: Errors Only – A middle ground: suppresses core auto-update success emails only. Failure emails still arrive so you know when action is needed (default OFF). Skip Bundled Themes on Upgrade – Defines CORE_UPGRADE_SKIP_NEW_BUNDLED to stop WordPress installing a new default theme on every core upgrade. Existing themes are not affected (default OFF). Disable Site Health – Disables WordPress Site Health checks entirely. Site Health runs a 12-hour background cron job and makes REST API calls on every admin page load, fetching a list of ~20 WordPress.org API endpoints. On managed hosting with automated updates, these checks are redundant and add unnecessary server load (default OFF). WordPress 7.0 Off switches for the new subsystems WordPress 7.0 turns on by default. AI Support – WordPress 7.0 ships a built-in AI client framework that initialises on every request. Filters wp_supports_ai to false so the AI subsystem never bootstraps — no providers, no AI REST surface, no AI options on the Connectors page. Connectors Registry – WordPress 7.0 initialises a connector registry on every request, frontend included, registering the bundled Akismet connector and any AI providers. Skips registry initialisation entirely on sites that use no connectors. Core AI Abilities – Stops WordPress from registering its built-in AI abilities (site info, user info, and more) when the Abilities API registry is first used. Completes the AI off switch. Abilities REST API – Removes the wp-abilities/v1 REST namespace (list, categories, and run endpoints) that exposes server-side abilities to REST clients. Icons REST Endpoint – Removes the /wp/v2/icons endpoints that serve SVG icon data to the block editor icon picker. AI Connectors Page – Removes the Connectors submenu from Settings, hiding the AI provider configuration page. Admin View Transitions – Removes the CSS View Transitions stylesheet WordPress 7.0 enqueues on every wp-admin screen, restoring instant admin navigation. Command Palette – Removes the ⌘K / Ctrl+K command palette: the admin bar trigger button and the JS bundle enqueued on every wp-admin page. Block Editor Remote Block Patterns – WordPress fetches patterns from api.wordpress.org on every editor load. …

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.