75 Slow WordPress Plugins That Impact PageSpeed + CPU Usage

Avoid these 75 WordPress plugins and your website will load faster.

Some plugins load slow on the frontend while others create resource-intensive background processes that increase CPU. This is common when plugins collect statistics (and other data), create backups, or generate large database tables which can be measured with WP-Optimize.

This list was made with the help of the WP Hive Chrome Extension which shows a plugin’s impact on memory usage and PageSpeed. However, I adjusted the results since WP Hive doesn’t take into account frontend CSS/JS/fonts loading when you actually display plugin content on the frontend. For example, even though WP Hive says Elementor doesn’t impact PageSpeed, it’s extra CSS/JS/fonts do once you start actually building your site in Elementor.

I also took into account Ivica’s list of slow plugins from the WordPress Speed Up Facebook Group page, as well as testing many WordPress sites using these plugins in Chrome Dev Tools.

PluginCategoryMemory ImpactPageSpeed Impact
All In One SEOSEOXX
AMPSpeedX
AnalytifyAnalyticsX
AnyWhere ElementorPage BuilderX
Backup BuddyBackupX
Beaver BuilderPage BuilderXX
Booking CalendarCalendarXX
Broken Link CheckerSEOX
Caldera FormsContact FormX
ComplianzCookieX
Defender SecuritySecurityX
DisqusCommentsX
Divi Contact Form 7Page BuilderX
Divi BuilderPage BuilderXX
ElementorPage BuilderXX
Elementor Addon ElementsPage BuilderXX
Elementor Essential AddonsPage BuilderX
Elementor ExtrasContact FormX
Elementor Header & Footer BuilderPage BuilderX
Elementor Premium AddonsPage BuilderX
Elementor ProPage BuilderXX
Elementor Ultimate AddonsPage BuilderX
Essential GridGalleryX
Events CalendarCalendarXX
Events ManagerCalendarXX
Everest FormsContact FormX
FiboSearchWooCommerceX
Final Tiles GridGalleryXX
Fluent FormsContact FormX
FooGalleryGalleryXX
ForminatorContact FormX
HappyformsContact FormX
iThemes SecuritySecurityX
JetElementsPage BuilderXX
JetpackSecurityXX
MailPoetEmailX
Livemesh AddonsPage BuilderXX
Master AddonsPage BuilderXX
Menu Image, IconsMenuXX
Modern Events CalendarCalendarXX
NextGEN GalleryGalleryXX
Ninja FormsContact FormX
Orbit FoxPage BuilderX
Paid Memberships ProMembershipX
Post SMTP MailerEmailX
Photo Gallery by 10WebGalleryXX
Popup BuilderPopupXX
Popup MakerPopupXX
PowerPack LitePage BuilderXX
Prime SliderSliderXX
Query MonitorAnalyticsX
Responsive LightboxGalleryXX
Shield SecuritySecurityX
Site Kit by GoogleAnalyticsX
Slider RevolutionSliderXX
Slimstat AnalyticsAnalyticsX
Smart Slider 3SliderXX
Social Media Share ButtonsSocial SharingX
Social Share IconsSocial SharingX
Social WarfareSocial SharingXX
Structured ContentSocial SharingX
Titan Anti-spam & SecuritySecurityX
Total UpkeepBackupX
Ultimate MemberMembershipX
Unlimited ElementsPage BuilderXX
User MenusMenuX
Visual PortfolioGalleryXX
WP Google MapsMapsXX
WP AutoTermsCookieX
WP fail2banSecurityX
WPBakeryPage BuilderXX
WooCommerceWooCommerceXX
WordfenceSecurityX
WP Hide & Security EnhancerSecurityX
WP Mobile MenuMenuXX
WP StatisticsAnalyticsX
wpDiscuzCommentsXX
WPFormsContact FormX
WPMLTranslateXX
WPvividBackupX
Yoast SEOSEOX

 

Lightweight Plugin Alternatives

  • SEO – Rank Math.
  • BackupsUpdraftPlus.
  • Comments – native comments.
  • SlidersSoliloquy or MetaSlider.
  • Gallery – Gutenberg Gallery or Meow Gallery.
  • Analytics – Google Analytics + Google Search Console (ideally no plugins).
  • Social SharingGrow Social is a fast social sharing plugin with less requests.
  • Theme/Page Builder – GeneratePress, Oxygen, Gutenberg, Genesis, Kadence.
  • No plugin – many things can coded in CSS or be done manually without using a plugin.

 

Find Your Slowest Plugins

Use Query Monitor or New Relic to find your slowest plugins. Some tools like GTmetrix Waterfall only show slow plugins on the frontend even if they create heavy background processes. Delete Query Monitor when you’re done since the plugin itself can increase CPU.

Query-monitor-slow-plugins
Query Monitor
Slow wordpress plugins
New Relic
Usage - chrome dev tools
Chrome Dev Tools
Slow wordpress plugin waterfall
GTmetrix Waterfall
Wp hive
WP Hive

 

Disable Unused Plugin Addons, Modules, Settings, Usage Tracking

Deactivate all addons and modules you’re not currently using (Ultimate Elementor Addons, JetPack, or other robust plugins). Also disable usage tracking for plugins that collect statistics.

Disable-addons

 

Selectively Disable Plugins

Use a plugin like Asset CleanUp or Perfmatters by Kinsta (recommend) to selectively disable plugins from pages/posts where they don’t need to load. Can significantly improve load times.

Examples:

  • Disable slider plugin on pages that don’t use sliders
  • Disable rich snippets plugin on pages that don’t use rich snippets
  • Disable contact form plugin on pages that don’t have a contact form
  • Disable affiliate link management plugin on pages that don’t use aff links
  • Disable social sharing plugin on all pages (since it’s usually for blog posts)

Remove unused elementor css javascript

 

AWStats Helps Identify Sources Of High CPU/Bandwidth

AWStats is a tool built-in to most hosting cPanels that provides statistics on CPU usage. It tells you whether certain bots, images, downloaded files, and even IP addresses are consuming a lot of CPU. You can also use the WP Server Stats plugin but I think AWStats does an awesome job.

AWStats helps you find:

  • High bandwidth crawlers
  • High bandwidth IP addresses
  • High bandwidth download files
  • High bandwidth files (eg. images)
  • Total bandwidth usage (for monitoring)

Robots-spiders-bandwidth

 

Avoid Slow Plugins On Shared Hosting

Shared hosting is very limited on server resources.

If you’re running slow WordPress plugins and are experiencing slow server response times in PageSpeed Insights, 503 errors, or you’re exceeding CPU limits, I highly recommend skipping shared hosting all together and go with someone like Cloudways. This is especially true for WooCommerce sites which require extra scripts, styles, cart fragments, and often more plugins.

 

Frequently Asked Questions

Do plugins slow down WordPress?

Yes, some more than others. Robust and poorly coded plugins will definitely slow down your site while lightweight plugins with clean code will have minimal impact on load times.

Which plugins slow down WordPress?

Page builders, social sharing plugins, portfolios, backup, and statistics plugins are all notorious for slowing down WordPress. Three common culprits include Elementor, WooCommerce, and Jetpack.

How can I find my slowest plugins?

Use Query Monitor or New Relic to find your slowest plugins.

How do I make plugins load faster?

Use lightweight plugins, be minimal, and selectively disable plugins from loading on specific pages and posts using a plugin like Asset CleanUp or Perfmatters.

Do number of plugins matter?

Every plugin adds to your load time, it just depends how much. Using lightweight plugins is more important than reducing the number of plugins, but both are important.

See Also: Ultimate WordPress Speed Guide

If you found this tutorial helpful, a share is always appreciated :)

Tom

About Tom Dupuis

Tom Dupuis writes WordPress speed and SEO tutorials out of his apartment in Denver, Colorado. In his spare time, he plays Rocket League and watches murder documentaries. Read his bio to learn 50 random and disturbing things about him.

45 thoughts on “75 Slow WordPress Plugins That Impact PageSpeed + CPU Usage

  1. Thank you for this lovely tutorial.
    My website jumped from 60 score at google page speed to 95 after applying what have been mentioned in your video.

    Thank you

  2. Hi, doing some tuning up this morning and found this post. Hopefully you get pings about comments.

    Anyway, it appears that the disabling plugin that you recommend is no longer being maintained (and this article is only 6m old). Is that because gutenberg does a lot of this for us now? Or do you recommend something else?

    1. Hey Lisa,

      Sorry I haven’t updated it yet. Clearfy is a great alternative and is maintained well. Asset CleanUp also has some disabling options which I would check out anyway.

  3. I found Yoast SEO also reduced my Yslow score in GTmetrix by a whole percentage point. And this was on the front end. Unfortunately, other SEO plugins do not appeal to me yet.

    1. Try SEO Framework, it seems to hit the sweet spot for me. Yoast is full of bloat even if you disable features, and makes the back end look like the village carnival.

  4. Get better hosting plan and forget 95% of the slowing down plugins.
    Already WP slow down your website I raccomend using pure HTML is lighting fast

  5. Hi Tom,

    Thanks for the great article. I would like more in-depth info on how, how much, and why Divi slows down websites. Same for WooCommerce. Thanks!

    1. Ah yes I haven’t jumped into those areas yet. WooCommerce and Divi are definitely infamous for being slow though, I gotta do some testing/research before I give an opinion on those.

  6. I am using Jetpack and Sumome both free version. I found Sumome reducing speed but again installed for email. I am a beginner. Should I uninstall these 2 plugins? I found blogs suggesting to use Jetpack. Just installed WP Disable and configured looking in your post. Thanks. Can you send a reply through email?

    1. The problem with these plugins is they come with so many features. Each feature you don’t use is basically “bloat” that slows down your site for no reason. What features are you using them for… are there other plugins that just have the features you want – so you don’t have to use such robust/heavy plugins?

  7. Great article; the two tips to get the optimisation.io plugin and the Wordfence plugins were great. They helped a lot to increase the speed of the WordPress Admin which was running really slow (the website for users/visitors was running pretty quickly so it was a confusing situation to be in).

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