As you may be aware, the Falkon browser (formerly QupZilla) serves as the default browser alternative to Firefox and Chromium in many modern Linux distributions — particularly those built on the KDE Plasma desktop environment. Falkon's user base is steadily growing and represents a significant group of users who value privacy and the use of free software.

Currently, however, the integration of Proton Pass in Falkon is not natively supported. This creates a gap in the user experience for this community. My proposal is to leverage the existing architecture of the Firefox extension as a reference to establish direct compatibility for Falkon.

Technical Rationale and Feasibility:

WebExtensions Standard: Falkon utilizes QtWebEngine and supports the WebExtensions API. Since the current Proton Pass extension for Firefox already builds upon this standardized framework, the technical portability is high. Rather than a full rewrite, it would likely require primarily adapting the compatibility layer to cover any nuances of the QtWebEngine environment.

Parallel to Firefox: Given that Firefox currently serves as the reference platform for the extension and Falkon meets similar requirements, porting it would be a logical next step in your strategy of cross-platform openness.

User Need: Many Linux users who prefer Falkon find themselves forced to either use a different browser or forgo the convenience of automatic password filling. Native support would significantly improve the usability of Proton Pass in this important niche and strengthen the appeal of your services for Linux purists.

I therefore kindly request that you consider adding this item to the roadmap for future Proton Pass updates. Should direct development not be prioritized at this time, perhaps it could be investigated whether the existing Firefox extension already runs in Falkon without further modifications? Often, compatibility exists even when it is not yet officially listed.