What Is WordPress and How It Is Dominating the Web for Website Creation

If you have ever asked “what is WordPress?”, the short answer is simple: it is free software that lets you build and run a website without writing code. The longer answer explains why roughly 40% of all websites run on it, and why no other platform has come close for more than a decade.

This guide covers what WordPress is, how it works behind the scenes, why it dominates website creation, where it falls short, and how to launch your own site the right way.

What is WordPress, in plain English?

WordPress is a content management system. That is a piece of software that sits on a web server and gives you a dashboard for creating pages, writing posts, uploading images and changing how your site looks. You log in through your browser, click around a visual editor, press Publish, and your content goes live.

Before tools like this existed, building a website meant writing HTML files by hand and uploading them one at a time. Changing a menu link meant editing every page. WordPress replaced that with a system where your content lives in a database, your design lives in a theme, and the software stitches the two together every time someone visits a page.

Three things define WordPress:

• It is free. You can download it from WordPress.org, install it on as many sites as you like and never pay a licence fee.
• It is open source. The code is public and released under the GPL licence. Anyone can read it, change it and share their changes. Thousands of volunteer and sponsored contributors improve it with every release.
• It is self-hosted. You install it on hosting that you control, so the site and everything in it belongs to you.

Technically, WordPress is written in PHP and stores its data in a MySQL or MariaDB database. You do not need to know either of those to use it. Almost every web host offers a one-click WordPress installer, and you can run a successful site for years without touching a line of code.

A short history: from blogging tool to web platform

WordPress started in 2003. Matt Mullenweg and Mike Little took an abandoned blogging tool called b2/cafelog and released their own version of it. The first release was a simple tool for publishing blog posts, and that is all it did.

What happened next explains its success. Each major step made WordPress useful to a wider group of people:

• 2004, plugins arrive. Developers could now add features without changing the core software. This single decision created the plugin ecosystem that defines WordPress today.
• 2005, themes and pages. You could change the whole look of a site with one click, and build static pages as well as blog posts. WordPress stopped being only a blogging tool.
• 2010, custom post types. Sites could now manage products, events, portfolios, listings or any other kind of content. This turned WordPress into a full content management system.
• 2011, WooCommerce launches. A free plugin turned any WordPress site into an online store, and it quickly became one of the most used ecommerce tools on the web.
• 2016, the REST API joins core. Apps and other systems could now read and write WordPress content, which opened the door to mobile apps and headless setups.
• 2018, the block editor. Version 5.0 replaced the old text editor with blocks. Every paragraph, image, button and column became a block that you can move and style.
• 2022, full site editing. Version 5.9 extended blocks to headers, footers and templates, so you can design a whole site visually with a block theme.

Today most WordPress sites run the 7.x series. The project still ships several major releases a year, each one built in public by its contributor community.

WordPress.org vs WordPress.com: the part that confuses everyone

This trips up almost every beginner, so it is worth clearing up early. There are two things called WordPress.

WordPress.org is the home of the free, open source software. You download it, install it on your own hosting and have full control. When people say “a WordPress site”, this is usually what they mean. It is also called self-hosted WordPress.

WordPress.com is a commercial hosting service run by a company called Automattic. It uses the WordPress software, but it packages hosting, updates and support into paid plans. Lower plans limit what you can install, and higher plans open up plugins and themes.

For most business sites, self-hosted WordPress is the better choice. The rest of this guide talks about that version.

How WordPress actually works

Once you understand the four moving parts, WordPress stops feeling mysterious. Every site has the same structure.

Core

Core is the WordPress software itself. It handles users, logins, the editor, the media library, menus, comments and the database. You update core from the dashboard with one click, and minor security releases install automatically by default.

Themes

A theme controls how your site looks: layout, fonts, colours and templates. Switching themes changes the design without deleting your content. Classic themes use PHP template files. Newer block themes let you edit every part of the site, including the header and footer, in the visual Site Editor.

Plugins

Plugins add features. Contact forms, SEO tools, caching, backups, online stores, booking systems, membership areas and thousands more. You install them from the Plugins screen in your dashboard, and most take less than a minute to set up. This is where WordPress gets its flexibility, and also where most problems start if you install too many or pick poorly coded ones.

The database and your content

Your posts, pages, settings and user accounts live in the database. Images and other uploads live in a folder on the server. When a visitor opens a page, WordPress pulls the content from the database, passes it through your theme and sends the finished page to the browser. A caching plugin speeds this up by saving finished pages so the server does not rebuild them for every visit.

The block editor

When you write a post, you work with blocks. Type a paragraph and it becomes a block. Add an image, a heading, a table, a button or a set of columns, and each one is its own block with its own settings. In practice this means you can build a decent landing page without a separate page builder, although many site owners still use builders like Elementor for more design control.

How big is WordPress? The numbers in 2026

The clearest way to see WordPress’s lead is to put it next to its rivals. These figures come from W3Techs, which tracks the technology behind the top ten million websites. They reflect data from October 2026.

Read that table twice. WordPress runs more sites than the next five platforms combined, several times over. Around three in ten websites use no detectable CMS at all, so among sites that do use one, WordPress holds close to six in every ten.

A few more numbers show the size of the ecosystem around it:

• The official plugin directory lists more than 70,000 free plugins.
• The theme directory offers thousands of free themes, with thousands more sold by independent shops.
• W3Techs reports that roughly one in five WordPress sites runs WooCommerce, which makes it one of the most widely used ecommerce tools anywhere.
• WordPress is translated into more than 200 languages and locales.

One honest note: the share has slipped a little from its peak of around 43% a few years ago. Hosted builders such as Shopify and Wix keep growing. WordPress is still far ahead, but it no longer gains ground every year the way it once did.

Why WordPress dominates website creation

No single feature explains a 40% share. It comes from several advantages that reinforce each other.

1. It is free and open source

There is no licence fee and no per-seat pricing. A student can start a blog and a company can run a hundred sites on the same software for the same cost: nothing. Because the code is open, nobody can take it away, raise the price or shut it down. That removes a risk that every closed platform carries.

2. You own your site

With a hosted builder, your site lives on the company’s servers under the company’s rules. If prices rise or a feature disappears, your options are limited. With WordPress, you can export your whole site, move it to a different host in an afternoon and carry on. Your content, your customer data and your design all stay with you.

3. There is a plugin for almost everything

Need a contact form? Install one. Need an online store, a booking calendar, a membership area, a forum, a multilingual site or a learning platform? There are several good options for each, usually with a free version to start. In practice, you rarely need a developer for common features. You search the plugin directory, check the reviews and last-updated date, install, and configure.

4. Design freedom without code

Thousands of themes cover every industry and style. Block themes and the Site Editor let you change layouts visually. Page builders add drag-and-drop control on top of that. If you can use a word processor, you can build a professional-looking site. If you can write code, you can build anything, because nothing in WordPress is locked away from you.

5. It is built for search engines

WordPress produces clean, crawlable pages with sensible URLs out of the box. Add an SEO plugin such as Yoast SEO or Rank Math and you get control over titles, meta descriptions, XML sitemaps, schema markup and redirects. You still have to write good content and earn links, but the platform never gets in your way.

6. WooCommerce turns it into a store

WooCommerce is a free plugin that adds products, a cart, checkout, payments, shipping and tax handling. It charges no platform commission on your sales, and you can extend it with thousands of add-ons for subscriptions, bookings, coupons, wholesale pricing and more. For store owners who want control over their data and costs, that is a strong argument against renting a hosted store.

7. A huge community stands behind it

Because so many people use WordPress, help is everywhere. You will find tutorials for nearly every task, active support forums, local meetups and WordCamp conferences around the world. Hiring is easy too. Far more developers, designers and agencies work with WordPress than with any other platform, which keeps costs competitive and means you are never stuck with one supplier.

8. It runs on almost any hosting

WordPress works on cheap shared hosting, on managed WordPress hosting and on enterprise cloud setups. You can start small and upgrade as traffic grows, without rebuilding the site. That low entry cost is a big reason so many first websites start on WordPress and then simply stay there.

9. It scales from a blog to a newsroom

The same software that runs a personal blog also runs large publishers, universities and government sites. NASA moved its main website to WordPress in 2023, which tells you something about how far the platform stretches. With good hosting, caching and a content delivery network, WordPress handles serious traffic.

10. Success feeds itself

This is the quiet reason behind the numbers. More users attract more plugin and theme developers. More plugins make WordPress more useful. More hosts build one-click installers and WordPress-specific plans. More tutorials get written. Each of these makes WordPress the default recommendation for the next person who needs a website.

What can you build with WordPress?

The short answer is almost any kind of website. The most common ones are:

• Blogs and news sites. This is where WordPress started and it is still the best tool for publishing.
• Business websites. Service pages, contact forms, testimonials and a blog, all managed from one dashboard.
• Online stores. Physical products, digital downloads, subscriptions and bookings through WooCommerce.
• Portfolios. Galleries and case studies for designers, photographers and agencies.
• Membership sites and online courses. Paid content, drip lessons and student progress through membership and LMS plugins.
• Directories and listing sites. Jobs, property, local businesses and events.
• Community sites and forums. Member profiles, groups and discussions.
• Headless sites and apps. WordPress manages the content and a separate front end displays it, using the REST API.

Where WordPress falls short

WordPress is the right choice for most sites, but it is not perfect, and you should know the trade-offs before you commit.

You are responsible for maintenance

Core, themes and plugins all need updates. Skip them and you leave known security holes open. You also need working backups. Managed WordPress hosts handle much of this for you, but someone still has to check that the site works after each round of updates.

Security depends on how you run it

WordPress core is well maintained and patched quickly. Most hacked WordPress sites get compromised through outdated plugins, abandoned themes or weak passwords. Because WordPress is so widely used, attackers target it constantly, so basic hygiene matters: update regularly, use strong passwords with two-factor authentication, and delete plugins you do not use.

Too many plugins slow things down

The part that trips most people up is plugin overload. It is easy to install thirty plugins in your first month. Each one adds code, and badly built ones add database queries and scripts to every page. A lean site with a dozen well-chosen plugins nearly always beats a bloated one.

There is a learning curve

Hosted builders such as Wix and Squarespace are simpler on day one. With WordPress, you choose hosting, install the software, pick a theme and learn the dashboard. Most people get comfortable within a week or two, but it does take a little longer to reach your first finished page.

Plugins sometimes conflict

Plugins come from thousands of different developers. Occasionally two of them clash, or an update breaks something. A staging site, where you test updates before applying them to the live site, removes most of this risk.

Governance debates

WordPress is open source, but its direction is heavily shaped by its co-founder and by Automattic. A very public dispute between Automattic and the hosting company WP Engine, which began in 2024, raised questions about how the project is governed. The software itself stays free and open under the GPL, so your site is not at risk, but it is fair to know the community has had its arguments.

WordPress vs Wix, Shopify and Squarespace

If you are choosing a platform today, these are the realistic alternatives. Here is how they compare on the points that matter most.

The pattern is clear. Hosted builders trade control for convenience. WordPress asks a little more of you and gives you far more room to grow. If you only need five pages and never plan to add anything complex, a builder is fine. If you expect your site to grow, WordPress saves you from a painful migration later.

How to start a WordPress site, step by step

Setting up your first site takes an afternoon if you follow the right order.

1. Pick a domain name. Keep it short, easy to spell and close to your brand name. Register it with your host or a separate registrar.
2. Choose hosting. Shared hosting is fine for a new site. Managed WordPress hosting costs more but includes backups, caching and updates. Look for free SSL, daily backups and a staging feature.
3. Install WordPress. Use your host’s one-click installer. Create a strong admin password and avoid the username “admin”.
4. Set the basics. Go to Settings and set your site title, timezone and permalink structure. The “Post name” permalink option gives you clean, readable URLs.
5. Pick a theme. Start with a lightweight, well-supported theme. Check the last-updated date and reviews before you install it.
6. Install only the essential plugins. An SEO plugin, a caching plugin, a backup plugin, a security plugin and a contact form cover most new sites.
7. Create your core pages. Home, About, Contact and a privacy policy, plus your services or products.
8. Connect analytics and Search Console. You want traffic data from day one.
9. Test on your phone. Most visitors arrive on mobile, so check every page there before you share the site.
10. Launch, then keep it updated. Set a reminder to check updates and backups every week.

On cost: the software is free, a domain typically runs to a small yearly fee, and entry-level hosting usually costs a few dollars a month. Premium themes and plugins are optional. Many sites run well for years on free ones.

Common mistakes beginners make

• Choosing the cheapest hosting available. Slow, oversold servers hurt both visitors and rankings. Good hosting is the best money you will spend.
• Installing too many plugins. Add one only when you have a clear need, and remove the ones you stop using.
• Skipping backups. Set up automatic daily backups stored away from your server before you do anything else.
• Ignoring updates. Outdated plugins are the most common way sites get hacked.
• Using nulled themes or plugins. Pirated copies often contain malware. Use the free version or pay for a licence.
• Editing the live site directly. Test big changes on a staging copy first.
• Leaving the default permalink setting. Change it to “Post name” before you publish content, because changing it later means setting up redirects.

Frequently asked questions

Is WordPress really free?

Yes. The software is free to download, use and modify. You pay for hosting and a domain name, and optionally for premium themes, plugins or developer help.

Do I need to know how to code?

No. You can build and run a full site with the block editor, a theme and plugins. Knowing some HTML and CSS helps when you want fine control, but it is not required.

Is WordPress secure?

WordPress core is actively maintained and patched. Most security problems come from outdated plugins, weak passwords and poor hosting. Keep everything updated, use two-factor authentication and take regular backups, and you remove most of the risk.

Is WordPress good for ecommerce?

Yes. WooCommerce handles everything from a handful of products to large catalogues. You get full control over your store and pay no platform commission, although you do take on more of the setup and maintenance than you would with a hosted store.

Is WordPress only for blogs?

Not any more. It started as a blogging tool, but today it runs business sites, stores, membership sites, online courses, directories and large news publications.

Is WordPress still worth learning in 2026?

Yes. With about 40% of all websites running on it, WordPress skills stay in demand for site owners, marketers, freelancers and developers alike. AI tools and hosted builders are changing how sites get built, but they have not replaced the need for a platform you own and control.

Can I move my site away from WordPress later?

You can. WordPress lets you export your content, and because you control the database and files, you are never locked in. Moving to WordPress from a hosted builder is usually harder than moving away from it.

Final thoughts

WordPress dominates the web for practical reasons. It is free, you own what you build, it adapts to almost any kind of site, and a huge community keeps improving it. Those advantages have kept it far ahead of every rival for well over a decade, even as hosted builders grow.

It does ask something of you in return. You look after updates, backups and security, and you need to choose your plugins with care. For most people that trade is well worth it.

If you are starting a site that you expect to grow, start with WordPress. Pick decent hosting, install a lightweight theme, add only the plugins you need, and publish your first page this week. You can refine everything else as you go.