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What is a Web browser? Definition, Types, and Features

Learn about how web browser have evolved. Explore their types, features, and functions.

Written by RamotionJul 3, 202412 min read

Last updated: Jul 3, 2024


With the advent of the internet, digital media has spread rapidly into the business world. Today, every organization must develop its online presence to interact with its customers and make space in the potential market.

Web browsers emerged as essential tools for creating and developing an online presence for enterprises. All modern businesses worldwide maintain their respective web browsers to establish their place in the competitive marketplace.

In this article, we will explore the basics of a web browser, understand how it works, and explore its different features. We will also explore the history of web browser evolution over time.

Read along to understand the role and importance of web browsers

Defining Web Browsers

All businesses or applications must use a web browser to access and establish their presence on the Internet. This makes these browsers an essential and basic part of the Internet's world.

Web development is entirely dependent on the concept of web browsers. It links to a world of developers hired by a website development firm to develop and maintain web browsers.

Since these browsers are crucial for modern digital businesses, they hire a team of developers or outsource the task to ensure they remain prominent in a highly competitive online market.

A web browser is an application used to access websites on the Internet. It is software that allows users to access and view content on the World Wide Web. A web browser acts like a translator, taking information from web servers and displaying it to the user as a web page.

Hence, web browsers act as gateways, allowing people to interact with businesses and others through the World Wide Web. A web browser gives you access to all platforms available on the internet, enabling you to view texts, images, and videos worldwide.

By entering a URL into the search engine, you guide your web browser towards a specific web server. The browser will access that server, fetch the requested information, and display it as a web page.

Hence, the main functions of a web browser are to fetch and display web pages and provide an interface for user interaction. It allows people to access information online in a user-friendly experience.

A list of popular web browsers of today (Konigle)

Some popular web browsers include Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, and Opera. Each works to provide access to the countless web pages available via the internet today.

Before we explore a web browser's exact function and work process, let’s examine its evolution over time.

History of Web Browsers

The web browsers we know and use today originated in the 1990s and have evolved to their present versions. Before their inception, hyperlinked applications emerged in the mid-1980s. These were early versions of web browsers that could navigate information within a single computer system.

Browsers with access to the World Wide Web emerged in the 1990s. Let’s examine the significant stages of their evolution.

Year Event Browser Key Feature Impact
1990 First Web Browser WorldWideWeb (Nexus) Text-based interface Established the foundation for the web
1991 Wider Accessibility Line Mode Browser Text-based for older terminals Allowed access beyond specialized computers
1993 Graphical Revolution Mosaic First graphical browser with images Made the web more user-friendly and appealing
1994 Browser Wars Begin Netscape Navigator User-friendly interface with bookmarks, back/forward buttons Set the standard for future browsers
1995 Competition Heats Up Internet Explorer (bundled with Windows) Gained market share through strategic bundling Fueled rapid development in the browser wars
Late 1990s-Early 2000s Browser Wars Intensify Netscape Navigator vs. Internet Explorer Advancements in speed, security, multimedia, and scripting Shaped the core functionalities of modern browsers
2004 Open Source Challenge Firefox Focus on open-source development and privacy Provided a strong alternative to Internet Explorer
2008 Chrome Emerges Google Chrome Speed, simplicity, and integration with Google services Quickly gained popularity and became the market leader
Present Day Diverse Landscape Chrome, Firefox, Safari, Edge, Opera Continued innovation in features like tabbed browsing, secure connections, and web app integration Provides users with a variety of options based on their needs

The First Web Browser: WorldWideWeb (1990)

1990 is marked as the year of birth for web browsers. Tim Berners-Lee, a computer scientist at CERN (European Organization for Nuclear Research), developed the world's first web browser.

Initially, he named it WordWideWeb, but it was later called Nexus. It was linked to the first web server, laying the foundation for the web as we know it today.

A glimpse of the WorldWideWeb interface (InsideHook)

Its main functions were to display web pages and navigate hyperlinks. It had no graphical elements and relied on a text-only interface. Plus, the interface offered limited user interaction, and people had to add URLs manually. Thus, the first web browser had very limited and primitive features to provide its users.

Evolution of Modern Web Browsers

The 1990s not only marked the birth of web browsers but also led to their development over time. The first change came in 1991, introducing a Line Mode Browser developed by the same Berners-Lee. It was a text-based browser designed for older terminals, allowing broader access to the web beyond specialized workstations.

A glimpse of the Line Mode interface (udger.com)

The next major shift came in 1993 with the development of Mosaic, the first-ever graphical web browser. It was developed by the National Center for Supercomputing Applications (NCSA) and presented images alongside the text on web pages.

A glimpse of the Mosaic interface (Wired)

With the introduction of these early browsers, the development arena took up the pace, and the mid-1990s are often marked as the era for ‘browser wars.’ It led to the introduction of Netscape Navigator in 1994 by Netscape Communications. It became the first widely used commercial web browser.

A glimpse of the Netscape Navigator interface (The Interface Experience)

The next milestone was Microsoft's development of Internet Explorer in 1995. Since the company bundled access to this browser free with Windows, it rapidly gained significant market share. Hence, it became a competitive place for the development of web browsers.

It resulted in faster loading times, improved security (HTTPS), support for multimedia (audio and video), and scripting languages like JavaScript for interactive web experiences. In the mid-2000s, the landscape began to shift with the introduction of Mozilla Firefox in 2004 as a major competitor to Internet Explorer.

Today, the world of web browsers has developed immensely, and this has resulted in the existence of multiple browser options. The diverse browser landscape of today is primarily defined by the following web browsers:

  • Google Chrome (2008): This browser quickly gained popularity with its speed, simplicity, and tight integration with Google services. It currently holds the largest market share.
  • Mozilla Firefox Continues to be a strong contender, known for its focus on privacy and customization options.
  • Apple Safari (pre-installed on Apple devices): Offers a clean and integrated experience within the Apple ecosystem.
  • Microsoft Edge (2015): The successor to Internet Explorer, Edge boasts improved performance and security features.
  • Opera: While less dominant than others, Opera offers unique features like a built-in VPN and data compression, making it appealing for specific needs.

This evolution of web browsers is a story of constant innovation and the drive to create user-friendly platforms for accessing the World Wide Web.

How a Web Browser Works?

Now that we know how web browsers have evolved, let’s look at how they work. Here’s a breakdown of how a web browser converts behind-the-scenes technical jargon into a user-friendly experience.

Outlook of how a web browser works (Medium)

Rendering Engine - The Web Architecture

It is the main component of a web browser that converts the website code into visual elements visible on a web page. The rendering engine receives instructions from a browser, interprets them, and builds a webpage accordingly. Following are the rendering engines used by mainstream browsers:

  • Blink: This engine powers Google Chrome and is known for its speed and efficiency.
  • WebKit: Used in Safari (Apple devices) and other browsers, WebKit offers robust features for rendering complex webpages.
  • Gecko: The engine behind Mozilla Firefox prioritizes open-source development and standards compliance.

Browser Components

While the rendering engine plays a central role in the working of a web browser, multiple other components bring to you any web page you access via the internet. Some key components include:

  • User Interface (UI): You interact with it directly. It includes the address bar, where you enter website addresses, the back and forward buttons for navigation, and the tabs that allow you to open multiple websites simultaneously.
  • Rendering Engine: As discussed, the architect is responsible for building the visual representation of the webpage.
  • Networking Component: It fetches website files (code, images, videos) from web servers worldwide, ensuring all the necessary pieces are delivered to the rendering engine to build the web page.
  • JavaScript Engine: It interprets and executes JavaScript code, allowing webpages to respond to user actions and create dynamic experiences.
  • Security Components: They handle tasks like encrypting data transmissions (HTTPS) and protecting you from malicious websites.

Each component plays a unique role and combines a completely functioning web browser.

Types of Web Browsers

Today, there are many browsers available to access the Internet and countless web pages. Businesses rely on different web browsers to make their web pages accessible to users. Since each gadget has a different layout, different web browsers are available that adapt to each one.

1. Desktop Browsers

Desktop browsers are a productivity powerhouse, offering complete features and functions for a smooth browsing experience. Compared to their mobile counterparts, desktop browsers provide a wider range of features, such as tabbed browsing, extensions and add-ons, and advanced security.

Some popular web browsers suited for the desktop include Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari. While Chrome is lauded for its popular Google services like Gmail and Docs, Firefox provides exceptional security and add-ons. Meanwhile, Edge is fast, and Safari provides a clean browsing experience.

2. Mobile Browsers

These browsers are designed for a mobile device’s smaller screen and touch interface. Usability and fast loading times are key features of mobile browsers to provide smooth browsing.

Safari for iOS is Apple’s built-in mobile browser integrated with Apple services. It is optimized for performance on iPhones and iPads. As for its Android counterpart, Chrome for Android works on Android devices. Like its web browser, its mobile version is synced with Google’s features.

These mobile browsers often come pre-installed on mobile devices, but alternatives are available based on users' preferences.

3. Embedded Browsers

These refer to miniature versions of web browsers embedded into other applications. They enable users to access the web browser without opening a separate window. Hence, they have limited features compared to a complete web browser.

Some common examples of embedded browsers are:

  • Email Clients: Many email clients have built-in web browsers for displaying web content within emails, such as interactive buttons or online surveys.
  • Social Media Apps: Social media platforms often embed web browsers so users can view shared links or articles without leaving the app.
  • Gaming Consoles: Modern gaming consoles frequently have built-in web browsers, which allow users to access online features game guides, and connect with other players.

It is important to understand the different types of web browsers when choosing the appropriate one for your use.

Features of Modern Web Browsers

With the development of web browsers, they have gained different features to enhance the user experience and optimize their functionality. Let’s take a look at the major features of modern web browsers.

Tabbed Browsing

It allows the user to manage and navigate through multiple websites simultaneously. You can open multiple tabs in a single browser, accessing each website in a separate tab.


An example of bookmarks (Comodo Help)

It enables the user to save websites for easy access later, revisiting them in the future without remembering the complete URL.

Browsing History

An example of browsing history (Vivaldi Browser)

It keeps track of all browser activity by noting all recently visited websites. It enables users to backtrack their activity and conveniently access pages browsed earlier.

Downloads Manager

It handles all the downloads initiated through the browser, keeping track of their progress. It even allows the user to pause or resume the downloads as convenient.

Search Bar

The integrated search bar allows users to type the relevant keywords directly into the browser window and search the web.

User Interface (UI) Customization

An example of user interface customization (Chrome Web Store)

It offers different personalization features for a customized UI, including themes, font sizes, and other settings.

Extensions and Add-Ons

An example of extensions and add-ons (PCMag)

Different extensions and add-ons expand the functionality of the browser. Some common ones include extensions and add-ons for ad blocking, password management, and grammar checking. It also includes antivirus extensions to protect the browser activity from any malware.


An example of synchronization (HelloTech)

It allows the user to synchronize their browsing data across multiple devices. It ensures an enhanced user experience if the browser is accessed on a desktop, mobile, or any other device.

Hypertext Transfer Protocol (HTTPS) Support

An example of HTTPS (The Mozilla Blog)

Hypertext transfer or HTTP support encrypts the user’s activity and information, protecting the user’s online communication and data.

Pop-Up Blocker

It prevents unwanted pop-up windows from interrupting the user’s browsing experience.

Incognito Browsing Mode

An example of incognito browsing mode (Computerworld)

It lets the user browse the internet without saving any browsing history or cookies. Hence, it offers further privacy for certain browsing sessions. This is a list of some of the most common features of modern web browsers.

As web browsers develop, new features and advanced functionalities are expected to become part of them.

Security and Privacy in Web Browsers

Security is an essential and fundamental requirement for modern-day internet users. Hence, web browsers take different approaches to safeguard users' online security and privacy. Some key components of web browser security include:

Hypertext Transfer Protocol Secure (HTTPS)

This protocol encrypts all data exchange occurring on a web browser. It ensures the privacy of important information like login credentials, credit card information, or personal data. Modern browsers visually indicate secure connections with a padlock symbol in the address bar and https:// at the beginning of the URL.

Tracker Blocking

With incognito modes, a web browser enables users to access the internet without tracking their activity. Pop-up blockers also aid the process by preventing unwanted windows from appearing on a web page.


It isolates websites from a user’s operating system and other programs. If a website tries to run malicious code, it remains within the sandbox environment, protecting the user’s device and data.

While these are some important features used to maintain the security of web browsers, the security patches are constantly updated to address gaps and fix bugs. Hence, it is crucial to keep the browsers updated.

Plus, modern browsers allow users to manage their privacy settings. Users can block third-party cookies, manage website permissions, and clear browsing data and cache.

Thus, users can minimize online risks and protect valuable information by understanding how web browsers approach security and privacy and practicing safe browsing habits.


Since Web browsers birth in the 1990s, they have transformed from simple text-based interfaces to the latest feature-rich applications. These modern browsers are even accessible on desktops, mobile devices, and others as needed.

Modern browsers also host multiple features, such as tabbed browsing, bookmarks, and history trackers, to provide users with an enhanced browsing experience.

Security features like HTTPS and incognito mode safeguard user privacy, and browser updates protect them against online threats.

Thus, users can optimize their browsing experience by better understanding web browsers and relevant safety practices. This will enable them to browse smoothly while protecting their valuable information and data.