# Mozilla spotlights Profile Manager Pro, privacy-first Firefox extension for session switching

> **Key takeaway:** Profile Manager Pro is a Firefox extension that saves and restores individual website sessions locally, letting users switch between multiple accounts without separate browser profiles.

**Published:** 2026-10-26T22:24:16+00:00 
**Source:** Planet Mozilla 
**Category:** distro-planet 
**Canonical URL:** https://fosswire.org/news/mozilla-spotlights-profile-manager-pro-privacy-first-firefox.html 

## Summary
Mozilla's Add-ons Blog has published a developer spotlight on Profile Manager Pro, a Firefox extension created by Islam Elsayed that streamlines switching between multiple online accounts on the same website. The extension stores session data including cookies, browser storage, and authentication tokens locally by default, with optional encrypted synchronization through Google Drive. It targets workflows such as web development QA testing, social media management, and freelance client work where users repeatedly log in and out of different accounts.

Elsayed emphasizes that the extension complements rather than replaces Firefox's full browser profiles, focusing instead on per-site session management within a single browser environment. The development involved solving heterogeneous authentication mechanisms across websites, as different services handle sessions through varying combinations of cookies, tokens, and storage APIs. Future work will concentrate on optimizing the profile management system and improving backup and sync capabilities.

## Technical architecture and privacy design
- **Session capture scope:** The extension captures and restores cookies, browser storage, authentication tokens, and other session state mechanisms to recreate complete login sessions for individual websites.
- **Local-first data handling:** All saved session information remains within the user's browser environment by default, with no requirement to create a service account or transmit data to third-party servers.
- **Optional encrypted sync:** Users can enable encrypted Google Drive synchronization for cross-device backup, maintaining end-user control over where session data resides.
- **Cross-site compatibility challenge:** The developer notes that authentication implementations vary significantly across websites, requiring tailored handling rather than a universal session-capture approach.
- **Privacy-integrated design:** Security considerations are framed as embedded throughout the design process rather than retrofitted, reflecting a shift toward privacy-by-default in browser extension development.

## Why it matters
For web developers and QA engineers working on Linux and other platforms, Profile Manager Pro reduces friction in testing role-based functionality across admin, moderator, and standard user accounts without maintaining multiple browser installations. The local-first architecture aligns with growing expectations in the open-source community that browser tools should minimize external data dependencies, offering a model that could influence similar extensions in the Chromium ecosystem and alternative browsers.