Falkon: The lightweight Qt-based browser that deserves your attention

Introduction

Falkon is an open-source web browser that has been gaining popularity among users who value speed and low resource consumption. Originally developed under the name QupZilla, the project was renamed to Falkon in 2017 and has since continued its evolution under the auspices of the KDE community. Unlike market giants, Falkon is based on Qt’s WebEngine rendering engine, which allows it to offer a modern browsing experience compatible with current web standards while maintaining a very small footprint. This combination of lightness and compatibility makes it an attractive alternative both for older machines and for users who prefer to keep their system agile and free of bloatware.

History and Origin

The project was born in 2008 as QupZilla, a lightweight alternative to the heavier browsers of the time. Its creator, David Rosca, sought to combine the power of QtWebKit with a clean and customizable interface. In 2016, after adopting QtWebEngine as the main engine, the team decided to rename the project to Falkon to reflect its new identity and its association with the KDE ecosystem. Since then, Falkon has received regular updates, security improvements, and new features that keep it relevant in a highly competitive environment. The transition to QtWebEngine not only improved support for modern standards such as HTML5 and CSS3, but also introduced a sandboxed process model that increases security against malicious content.

Main Features

  • Qt’s WebEngine engine, compatible with HTML5, CSS3, and modern JavaScript, ensuring faithful rendering of most current websites.
  • A minimalist user interface that adapts to light and dark themes, allowing the user to choose the appearance that best fits their work environment or visual preference.
  • An integrated bookmarks manager with support for import and export from other browsers, facilitating migration without losing important data.
  • A reading mode that eliminates distractions such as ads, sidebars, and widgets, presenting content in a clean, text‑focused format.
  • An built‑in ad blocker based on EasyList and EasyPrivacy lists, which reduces bandwidth usage and improves privacy by preventing third‑party tracking.
  • Support for grouped tabs, site pinning, and navigation via trackpad or mouse gestures, increasing productivity in multitask workflows.
  • Extensions via Qt’s plugin system; although the ecosystem is smaller than Chrome’s or Firefox’s, it still allows adding functionalities such as password managers, development tools, or integrations with third‑party services.

Performance and Resource Usage

One of Falkon’s greatest advantages is its low memory and CPU consumption. In tests on machines with 4 GB of RAM, Falkon typically uses between 150 and 250 MB of memory with several tabs open, compared to the 400‑600 MB that Chrome or Firefox can consume under similar conditions. This saving translates into a smoother experience on old laptops, netbooks, or virtual machines where every megabyte counts. Moreover, startup time is notably fast, often under two seconds on modern systems, making it ideal for quick work sessions or as a secondary browser when a lightweight alternative is needed.

Customization and Extensions

Although Falkon does not have an add‑on store as vast as those of its competitors, it allows installation of extensions via Qt’s plugin system. Users can add functionalities such as password managers, development tools, or integrations with third‑party services like Pocket or GitHub. Interface customization is achieved through themes and the ability to rearrange toolbars, enabling the browser to be adapted to specific workflows, whether for web development, academic research, or everyday use. Moreover, the configuration file is readable and editable, making it easy to create custom profiles that can be exported and imported between different machines.

Security and Privacy

Falkon inherits the security measures of QtWebEngine, including sandboxing, phishing protection, and automatic updates of malicious‑site lists. The built‑in ad blocker not only improves loading speed but also reduces tracking by advertising networks, contributing to a more private browsing experience. Additionally, the browser offers a private browsing mode that does not store history, cookies, or form data when the session ends, and allows selective deletion of browsing data via the settings panel. These features make Falkon a solid choice for users concerned about protecting their personal information while browsing.

Community and Development

Falkon’s development is driven by volunteers and sponsored by KDE. The source code is available under the GNU General Public License (GPLv2 or later), allowing anyone to inspect, modify, and redistribute the software. Releases are published regularly on the official site and in the repositories of major Linux distributions, with packages also available for Windows and macOS. The active community maintains a bug tracker, a wiki, and chat channels where users can seek help, report issues, or contribute patches. This open development model ensures that Falkon continues to evolve in line with real user needs and technological advances in the Qt ecosystem.

Conclusion

Falkon represents a solid option for those seeking a lightweight, fast, and privacy‑respecting web browser without sacrificing the essential features of modern browsing. Its Qt base provides stability and compatibility, while its focus on low resource consumption makes it ideal for modest hardware or for users who prefer to keep their system agile. If you haven’t tried it yet, it’s worth downloading

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Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional para Francesc Roig francesc@vivaldi.net .