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Why do plugins slow down WordPress?

Why do Plugins Slow Down WordPress Websites?

Are you trying to make your site faster? Wanna know “Why do Plugins Slow Down WordPress Websites ?” Wanna know what plugins slow them?

Of the Top Million Websites on the Internet, 37% of websites were created by WordPress.

And I accept the fact that WordPress has made website creation and management so easier than in the past.

But now WordPress has been filled with Plugins that can slow down websites/blogs easily without letting you know.

And this article will help you sort this problem for a faster and SEO-optimized Website.

What does plugins do in website?

For readers, who haven’t understood the reason behind using plugins in WordPress, let me explain to you a bit.

Plugins are the additional software component used in Worpress to skip the hard work of coding/programming a website. And this is what makes WordPress, an excellent platform for people who can create, design, and manage websites without even knowing how to code.

And based on this idea, millions of plugins are created with free and premium features for you.

According to WP Beginner, there are more than 54,000 free WordPress plugins available in the official plugins directory.

This helps you to add various types of features and designs to your website without writing a single code.

Why do Plugins Slow Down WordPress Websites?

Now that you know what are plugins and how they help website owners to design and manage their website without any programming, we will talk about ” Why do Plugins Slow Down WordPress Websites? “

Every plugin has a set of code installed in it and it appears on your website’s backend while you load a website.

The amount of code you have on any website decides whether a website will load slowly or fastly.

WordPress Website’s speed decreases due to heavy code on the backend, load CSS files, and JavaScript libraries. And when someone opens a website, all the necessary code and files are loaded from the cloud host of the website for the best user experience possible, which includes all the plugin codes for visitors to enjoy the useful and creative features of the different plugins on your WordPress.

How do Plugins make a Website Load Slow?

When you have 5-10 or even 20 plugins activated on your website to work, they all take time to load together on the visitor’s browser which increases load time. Hence, eventually decreasing the site speed.

What is the need for a faster website?

A faster website has some really good advantages which are mentioned below:

  • Better user experiance
  • Better Conversion rate
  • Less Bounce rate
  • Better Google SERP ranking

Disadvantages of Slow Websites

  • Terrible user experiance
  • High Bounce rate and less page view time
  • Low Google SERP ranking
  • Increased Earnings of the website
  • Bad Image of the website and Brand

Stats on How Page Load time Affects a Website’s Growth

1. 0-4 Second is the Ideal load time

2. The probability of bounce increases 32% as page load time goes from 1 second to 3 seconds.

3. As page load time goes from one second to 10 seconds, the probability of a mobile site visitor bouncing increases 123%.

Factors of Plugins responsible for Slowing Down Websites

1. Website Coding

Code is programming in web development to build websites that gives the website’s design, instructions, and features. This code is downloaded by every visitor who loads the website in his/her browser.

And the less code a website has determines the speed of the website to load in a person’s browser.

2. Heavy CSS Files Used

Cascading Style Sheet(CSS) is used to style a website with HTML programming. It helps in styling the presentation, background color, icons, fonts, font sizes, layouts, etc.

This is the most fundamental thing in web development.

But the problem is that some of the unused CSS files increase load speed as they are in your website layout and are of no use generally.

The Coverage tab in Chrome DevTools can help you find unused JavaScript and CSS code through which you can remove them easily and make your site faster to load.

3. Large JavaScript Libraries

A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies. (From Wikipedia)

Poorly written JavaScript code can slow your website, negatively affecting the load times and rendering speed of a website.

You can optimize your Javascript by Minifying Javascript code for some small file sizes and excluding unused components of .js libraries.

You can also try using a Javascript Content Delivery Network(CDN) which helps you load faster at any part of the globe.

4. Plugins Extra Database

Some Plugins with complex actions and code makes the backend processing hard for the browsers to load the websites. There are some quickly loading plugins that have a negligible effect on the load speed but even one complex plugin can increase a site load speed by one second.

So one should inspect a plugin before installing it that does it have a high effect on load speed or not.

5. External API’s

An external or open API is an API designed for access by a larger population as well as web developers. This implies that an external API can be easily used by developers inside the organization (that published the API) and any other developer from the outside who desires to register into the interface. (By RapiDapi)

In general, calling an API is more time-consuming than calling a user function due to Context switching (called Context Switching Time) which is not best for developer use. This is the time required to save the context of one process that is in the running state and then get the context of another process that is about to come in the running state.

Which Types of Plugins Slow Down WordPress Website?

There are some plugins that are tried and tested by many developers which are reported to affect load speed by many WordPress users.

Below you can see some of the plugins sorted out from Online Media Masters – Created by Tom who has taken these stats from some good research which shows the impact of plugins on page speed listed below:

  • AMP
  • Analytify
  • AnyWhere Elementor
  • Backup Buddy
  • Broken Link Checker
  • Caldera Forms
  • Complianz
  • Defender Security
  • Divi Contact Form 7
  • Everest Forms
  • Fibi Search
  • Fluent Forms
  • Forminator
  • Happy Forms
  • IThemes Security
  • MailPoet
  • Ninja Forms
  • Orbit Fox
  • Paid Memberships Pro
  • Post SMTP Mailer
  • Query MOnitor
  • Shield Security
  • Slimstat Analytics
  • Titan Anti Spam and Security
  • Total Upkeep
  • Ultimate Member
  • User Menus
  • WP Auto Terms
  • WP fail2ban
  • Wordfence
  • WP Hide and Security Enhancer, WP Statistics, WP Forms, WP vivid
  • Yoast SEO(some cases)

How many Plugins are Too much for a Website?

Now, this is an important question which every WordPress user has in their mind which we are going to discuss below:

There isn’t any limit for installing and using plugins on a WordPress website. Since, plugins are made to give features, designs, and solutions to users’ problems, you can use as many as you want. The average amount of plugins used by businesses are about 25-30 and can be much more.

But the important thing to note down is, that when you install a plugin, do check the actions which the plugin performs and on what level(complex or simple).

This gives you an idea of whether you should install the plugin or not because heavy code plugins slow down your website.

How to distinguish between Fast and Slow Plugins?

How to do a Speed Test of your website?

There are som many ways to take a speed test of your website which can help you determine the speed and give you solutions and issues in your website to be overcome for a faster one.

Some of them are mentioned below on the basis of quality and their popularity:

And the best thing is to take speed test on various platforms to get a average load time of a website for a clear picture.

You’ll also get to know about factors which affect your site speed and recommended solutions for your website. Learn more about Speed Test tools here

How to find Plugins which Slow Down your Website?

As we have discussed earlier, Plugins slow down websites by their files and databases which highly impacts site’s speed and performance.

Plugins perform complex operations and drive large amounts of data. Here are some ways to find the slow ones:

  1. Deactivate All Plugins: Go the the Plugins Menu in WordPress and bulk deactivate all the plugins. And then activate one plugin at a time and check the load time effect on your website with the help of a Speed tests. This will help you sort the issue of ugin is ing down your
  2. Query Monitor Plugin: You can check the query of any page of your website by going to Queries > Queries By Component and then review slowest plugins which is not needed by your website and delete them(Don’t forget to delete this plugin after use).
  3. Use WP Hive Chrome Extension: This extension helps you to recognise plugins that slows down your site. This plugins shows you whether a plugins affects your memory or page speed.
  4. Use New Relic And GTmetrix Waterfall: These are some other plugins that help you with a list of all the plugins and their load time to distinguish between the fast and slow ones.

5 More Ways to Improve your Website Speed

  1. Use Image Optimizer Plugins or Software:
  2. Choose fast hosting service:
  3. Use a faster theme for Mobiles and Desktop:
  4. Use a CDN for your site:
  5. Clear purged cache regularly :

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