Vivaldi vs. Firefox: A Comprehensive Browser Comparison

The world of web browsers is constantly evolving, with countless choices available to users who aim to select the best browser for their browsing needs. Two popular and well-performing web browsers, Vivaldi and Mozilla Firefox, have garnered a dedicated following due to their unique features and commitment to user privacy. This article delves into the comparative analysis of these two web browsers, helping users make an informed decision based on performance, security, and customization.

Vivaldi enjoys a reputation for being a highly customizable browser, tailored for users who desire a personalized browsing experience. On the other hand, Mozilla Firefox is a widely known open-source web browser with a focus on user privacy and a vast range of available third-party extensions. Both browsers boast impressive performance, with Vivaldi and Firefox having only a slight difference in execution speed, as evidenced by their performance in Windows-based devices.

As we explore the strengths, weaknesses, and unique aspects of Vivaldi and Mozilla Firefox, readers will gain a comprehensive understanding of their respective features and which browser may be the best fit for their individual browsing needs. In the upcoming sections, we shall discuss various factors, such as user interface, security, and privacy, providing valuable insights into these leading web browsers.

Browser Overview

Brief History

Vivaldi is a relatively new web browser, launched in 2016 by a team led by Jon Stephenson von Tetzchner, a co-founder of Opera Software. Vivaldi is based on Chromium, the open-source project that powers Google Chrome and other browsers like Microsoft Edge. Vivaldi’s focus is on customization and advanced features, catering to power users looking for a highly configurable browsing experience.

Mozilla Firefox has a longer history, dating back to 2002 when it was created as a side project by Mozilla, the organization behind the open-source browser suite Netscape. Firefox gained popularity as a fast and secure alternative to Internet Explorer, eventually becoming one of the most widely used web browsers globally. It’s based on the Gecko engine, which Mozilla developed, and has a strong emphasis on privacy, customization, and community-driven development.

Market Share

As of July 2023, the market share for web browsers is as follows:

  • Google Chrome: 64%
  • Safari: 19%
  • Firefox: 9%
  • Microsoft Edge: 5%
  • Opera: 2%
  • Other browsers (including Vivaldi): 1%

Based on the data provided, it’s clear that Vivaldi holds a significantly smaller share of the market compared to more established browsers like Firefox. However, it’s important to remember that market share doesn’t directly correlate to the quality or suitability of a browser for individual users.

In the following sections of this article, we will explore the features, performance, and security aspects of both Vivaldi and Firefox to help you make an informed decision on which web browser is the better choice for your needs.

User Interface and Customization

In comparing Vivaldi and Firefox, we will first examine how each browser handles its user interface and customization options. Both browsers emphasize ease of use and personalization, offering unique strengths for their intended users.

Tabs and Tab Management

Vivaldi offers a more powerful tab management system, allowing users to organize their tabs using features such as tab stacks and tab tiling. Tab stacks let users group related tabs together, making it easier to manage multiple open tabs. Tab tiling allows users to view multiple tabs side by side or in a grid layout, making multitasking more efficient. In Firefox, tab management is a bit more basic, with the ability to pin and mute tabs, but without the advanced stacking and tiling features.

Feature Vivaldi Firefox
Tab Stacks Yes No
Tab Tiling Yes No
Pin Tabs Yes Yes
Mute Tabs Yes Yes

Themes and Appearance

Both Vivaldi and Firefox offer a range of customization options to suit individual user preferences. Vivaldi boasts a more extensive variety of themes, including dark mode and a calendar feature. Additionally, its interface allows for more granular customization, enabling users to adjust nearly every UI element to their liking. Firefox, on the other hand, also supports dark mode and offers a more streamlined, minimalistic interface. However, it has fewer customization options in comparison to Vivaldi.

  • Vivaldi:
    • Extensive theme options
    • Granular customization of UI elements
    • Dark mode and built-in calendar feature
  • Firefox:
    • Dark mode support
    • Streamlined, minimalistic interface
    • Less customization options than Vivaldi

Both browsers allow for the management of bookmarks, and they each support functionality for taking notes and organizing one’s workflow. As users dive into the respective interfaces, they will discover the particular strengths of Vivaldi and Firefox, and be able to make an informed decision about which browser suits their unique needs and preferences.

Performance and Speed

Memory Usage

Vivaldi and Firefox handle memory usage differently, affecting performance on various devices and platforms. While both browsers offer efficient browsing experiences, Firefox tends to have lower memory usage compared to Vivaldi. This is due to Firefox’s use of the WebRender engine, which offers improved memory management. However, Vivaldi’s performance is still adequate, especially on devices with ample RAM.

Browser Memory Usage (Windows) Memory Usage (macOS) Memory Usage (Linux)
Vivaldi Moderate Moderate Moderate
Firefox Low Low Low

RAM Usage

RAM usage is an essential aspect of a browser’s performance. Lower RAM usage can lead to better speed and overall device performance. Firefox generally consumes less RAM compared to Vivaldi, resulting in faster browsing experiences across platforms such as Windows, macOS, Linux, Android, and iOS.

Browser RAM Usage (Windows) RAM Usage (macOS) RAM Usage (Linux) RAM Usage (Android) RAM Usage (iOS)
Vivaldi Moderate Moderate Moderate Moderate Moderate
Firefox Low Low Low Low Low

Rendering Engines

Vivaldi uses the Blink rendering engine, which is also used by Google Chrome and other Chromium-based browsers. Blink ensures compatibility with most websites but might slightly impact the browser’s speed and performance. Firefox, on the other hand, uses the SpiderMonkey JavaScript engine and the WebRender rendering engine. WebRender optimizes rendering performance, making Firefox faster in certain scenarios.

To summarize, both Vivaldi and Firefox have their own strengths and weaknesses in terms of performance and speed, depending on factors like memory usage, RAM usage, and the rendering engines they employ. After understanding these aspects, the user can make an informed decision based on individual needs and device specifications. The comparison of additional features like customization, privacy, and security can also play a role in deciding which browser is more suitable.

Privacy and Security

Privacy Protection Features

Both Vivaldi and Firefox prioritize user privacy. Vivaldi offers numerous built-in settings to control how individual websites collect user data. Firefox, an open-source browser, is known for its strong commitment to keeping user data private. It implements strict tracking protection, which is by default enabled in private browsing mode, while Vivaldi offers customizable privacy settings.

Tracking and Ad Blocker

Vivaldi includes a built-in tracking and ad blocker, called Tracker and Ad Blocker, that can be enabled or disabled on a per-site basis. Additionally, Vivaldi offers customization for blocking specific trackers and ads, giving users the control they desire when it comes to their browsing experience.

Firefox offers an integrated tracking protection feature that automatically blocks known trackers to safeguard user data. Users can also easily install additional ad-blocking extensions for the browser.


Neither Vivaldi nor Firefox come with a built-in VPN. However, as both browsers support extensions, users can install and use various third-party VPN services to enhance privacy and security while browsing online.

Security Risks

Vivaldi and Firefox are committed to providing a secure browsing experience for their users. They regularly release updates to address vulnerabilities and protect users from malware, viruses, and hackers. However, no browser is completely immune to security risks, and it is essential for users to be vigilant and practice safe browsing habits.

In the realm of privacy and security, both Vivaldi and Firefox show a strong commitment to protecting their users. Customizable privacy features and built-in ad and tracker blocking make these browsers attractive choices for those who prioritize online safety. Continuing with this topic, let’s explore how these browsers handle other important aspects of the user experience.

Extensions and Add-ons

Support and Compatibility

Vivaldi and Firefox both offer support for extensions and add-ons, allowing users to customize their browsing experience. Vivaldi, being built on the Chromium platform, has excellent support for Chrome extensions. Firefox, on the other hand, has its own add-ons ecosystem, which is separate from the Chrome Web Store.

Although both browsers offer a wide range of extensions, some may not be compatible across platforms due to differences in technology and coding standards. However, many major browsers, including Edge, Opera, Vivaldi, and Brave, have adopted the WebExtensions API, which allows for greater compatibility among different browsers. As a result, developers can create extensions that work seamlessly across different platforms, including Firefox and Vivaldi.

Popular Extensions

Below are some popular extensions available for both Vivaldi and Firefox:

  • Ad-blockers: Extensions like uBlock Origin and Adblock Plus provide powerful ad-blocking capabilities.
  • Password Managers: LastPass and Bitwarden help manage and secure your passwords across multiple platforms.
  • Privacy Tools: Privacy Badger, HTTPS Everywhere, and Decentraleyes enhance online privacy and security.

While both browsers have access to their respective extensions and add-ons, their support varies. In some cases, an extension may work better on one browser than the other, or may even be exclusive to a specific platform.

Chrome Web Store

Vivaldi has an advantage over Firefox in terms of support for Chrome extensions due to its Chromium foundation. This means that users can directly access and install extensions from the Chrome Web Store, which has a vast selection of extensions available. On the other hand, Firefox users will need to rely on the Firefox Add-ons marketplace for their extensions, which may not carry all the same offerings as the Chrome Web Store.

Despite these differences, both Vivaldi and Firefox prioritize providing their users with a customized browsing experience through extensions and add-ons. This commitment to customization helps ensure that users have the tools and resources needed for an efficient and enjoyable browsing experience, with the flexibility to adapt to their individual preferences.

In the next section, we will discuss other aspects of Vivaldi and Firefox to better understand their unique features and capabilities.

Syncing and Multi-Platform Usage


Both Vivaldi and Firefox require users to create an account in order to sync data across devices. The account setup process is straightforward for both browsers. Simply go to their respective websites, provide your email address and create a strong password.

Data Synchronization

Data synchronization is an essential feature of modern browsers. It allows users to sync their browser data such as settings, open tabs, history, and bookmarks across multiple devices.

Vivaldi supports syncing the following categories:

  • Bookmarks
  • Notes
  • Passwords
  • Extensions
  • Settings

Firefox supports syncing the following categories:

  • Bookmarks
  • Passwords
  • History
  • Open tabs
  • Add-ons (extensions)
  • Settings

Cross-Platform Availability

In terms of cross-platform availability, both browsers are accessible on a variety of operating systems. Vivaldi is available on Windows, macOS, and Linux, while Firefox can be found on Windows, macOS, Linux, and BSD.

Mobile App

Vivaldi does not offer a dedicated mobile app for iPhone or Android devices, which can be a disadvantage for users who want to sync their data on mobile devices. However, they recently launched a beta mobile version for Android that can be sideloaded on your device.

On the other hand, Firefox has a mobile app available for both Android and iOS. The mobile app offers a similar browsing experience as the desktop version and allows users to sync their data from desktop to mobile seamlessly.

In the next section, we will delve deeper into some other differences and similarities between Vivaldi and Firefox, such as privacy features and customization options.

Additional Features and Tools

Mail and Calendar

Vivaldi provides a built-in Mail and Calendar functionality, which enhances productivity as users can manage their emails and appointments within the browser. This feature is useful for power users who want to streamline their online communication and planning without needing separate applications. On the other hand, Firefox does not have a built-in mail or calendar application, but it does offer compatibility with various mail and calendar extensions available in its add-on community.

Built-in Screen Capture

Vivaldi offers a native screen capture tool that allows users to take screenshots of web pages or the entire browser interface with a single click. This tool adds convenience to the browsing experience and eliminates the need for third-party screenshot extensions. Firefox also supports screen capture functionality, but it is not as seamlessly integrated into the browser. Users can access this feature through the Web Developer menu or by installing a dedicated extension.

Browser Screen Capture Tool Integration Level
Vivaldi Native High
Firefox Web Developer Menu Medium

Twitch Integration

An interesting feature for gaming enthusiasts in Vivaldi is the built-in Twitch integration, which allows users to monitor their favorite streaming channels and get notifications directly within the browser. This feature enhances the sense of community and entertainment while browsing. Firefox, on the other hand, does not offer native Twitch integration but supports various Twitch-related extensions that can provide similar functionality.

In this section, we discussed some of the additional features and tools provided by Vivaldi and Firefox browsers. These native tools and functionalities contribute to the overall browsing experience and cater to the various needs of power users. In the next section, we will explore other aspects that differentiate these browsers, helping you understand which option suits your preferences better.

Pros and Cons

Vivaldi and Firefox are both popular web browsers, each with their own unique features and advantages. In comparing these two browsers, we can weigh the pros and cons to better understand their similarities and differences.

Vivaldi is known for its high customizability, allowing users to tailor the browser’s interface to their preferences. Its Tab Stacks feature enables efficient tab management by grouping multiple tabs together. Vivaldi also includes built-in note-taking functionality and boasts a powerful Quick Commands feature for faster browsing. However, Vivaldi’s main drawbacks are that it is based on Chromium, making it slightly less privacy-focused compared to Firefox, and that its user base is smaller, which may result in less frequent updates and limited extension compatibility.

Firefox prioritizes privacy and security, with various built-in features like Enhanced Tracking Protection and a strong reputation in the open-source community. It also has a large selection of extensions and generally receives regular updates. One downside of Firefox is that its performance may not be as fast as some Chromium-based browsers.

Feature Vivaldi Firefox
Customizability High Moderate
Tab Management Excellent Good
Privacy & Security Good Excellent
Extension Compatibility Moderate High
Performance Fast Moderate

While there are similarities in performance and overall browser experience, the key differences lie mainly in customizability and privacy. Your choice between Vivaldi and Firefox may depend on whether you prioritize personalizing your browsing experience or having a stronger focus on privacy and security. As you consider these pros and cons, the next section will provide recommendations to help further inform your decision.


The comparison between Vivaldi and Firefox has led to key insights into their capabilities and limitations. Vivaldi, known for its customizable interface and efficient resource management, has gained popularity among users seeking a personalized browsing experience. On the other hand, Firefox, with its strong focus on privacy and security, remains a top choice for those concerned about safeguarding their data online.

Regarding performance, both Vivaldi and Firefox have shown similar results in various tests, indicating that users can expect a comparable level of efficiency from each browser. However, it’s essential to consider individual preferences and requirements when choosing a browser, as features and functionalities may vary.

In terms of privacy, Firefox has a more established reputation, while Vivaldi continues to improve its offerings. This makes Firefox a more secure choice for privacy-conscious users, although Vivaldi is gradually gaining ground in this area.

Ultimately, the choice between Vivaldi and Firefox depends on user priorities and preferences. By knowing the strengths and weaknesses of each browser, one can make a well-informed decision that caters to their specific browsing needs.