Cookie Plus

Cookie Plus is a sophisticated browser extension designed to revolutionize how you manage and synchronize cookies and local storage data across multiple devices. Tailored for developers, power users, and privacy-conscious individuals, Cookie Plus offers a secure, seamless platform to backup, sync, and control your session data with strong encryption and versatile sync options. By ensuring that your cookies and local storage remain consistent and accessible no matter where you browse, this tool boosts productivity and convenience while upholding the highest security standards.

At its foundation, Cookie Plus operates as both a synchronization bridge and a security guardian for your browser storage data. You have the flexibility to choose between syncing via a self-hosted server, giving you full ownership and control of your data, or a convenient, centralized platform service managed by Cookie Plus. Once installed, you can select your preferred sync mode and customize how the extension fits your workflow. It actively monitors your specified domains, automatically capturing cookies and local storage changes in real time. Using robust client-side encryption—with an option for deterministic encryption to support specific use cases—your sensitive session tokens and login information are safeguarded so that no unencrypted data ever leaves your device.

The extension features an intuitive interface accessible from a browser popup and an advanced options page. From the popup, you can quickly check the sync status of the current website, add or remove domains to be monitored, manually trigger synchronization, and review logs or any warnings that arise during sync. The options page provides deeper control, allowing you to manage monitored domains, set sync intervals, tweak encryption settings, manage device identity, and configure advanced server connections. For organizational use and power users, Cookie Plus supports device management capabilities where you can authorize or revoke devices, view sync activities per device, and propagate configuration changes across all your linked devices with ease.

Synchronization in Cookie Plus is engineered for simplicity and reliability. While you browse, the extension continually watches over your configured domains for changes. Upon detection, it prepares encrypted data packets and sends them securely to your chosen backend. Connected devices then retrieve and merge these updates either in real time or according to user-defined sync schedules. With intelligent merge logic tailored for local storage, the extension preserves unique keys on different devices to prevent accidental overwrites or data loss. Cookie synchronization respects cookie lifetimes and HTTP-only flags, ensuring that sessions keep their intended behavior. Additionally, all sync events are transparently logged locally, enabling you to troubleshoot, verify, and maintain oversight over your synchronization processes.

Privacy and security underpin every aspect of Cookie Plus. All data synchronized is encrypted before transmission, protecting your information against interception. The extension employs device fingerprinting to authenticate clients securely, minimizing risk of unauthorized access. Cookie Plus does not collect any personal browsing content beyond the essential data required for synchronization. You retain full control over your sync data—you can delete stored data or remove devices from your account at any moment. Permissions requested by the extension are strictly limited to what is necessary for monitoring and sync activities. Transparency is a priority, with all encryption, sync status, logs, and settings available through a clear and straightforward user interface.

Ideal for a variety of users, Cookie Plus excels for:
- Developers managing login-protected testing environments across multiple browsers and devices.
- Power users seeking consistent login sessions and web data synchronization at home, office, and mobile contexts.
- Teams sharing access to staging environments without repetitive re-authorization steps.
- Privacy advocates demanding encrypted, fine-grained control over what data syncs and where it is stored.

Key Features:
- Multi-device synchronization of cookies and local storage with strong encryption.
- Choose between self-hosted servers or Cookie Plus’s cloud platform for backend sync.
- Granular domain monitoring—only selected sites’ data is captured and synced.
- Quick add/remove domains directly from the browser popup for effortless domain management.
- Manage devices individually: authorize, rename, revoke, and view sync status for each browser instance.
- Client-side encryption with an option for deterministic encryption to facilitate consistent encrypted values.
- Intelligent local storage merge logic preventing overwrites and data loss.
- Detailed logs and sync warnings accessible from popup and options for transparent monitoring.

How It Works:
1. Install Cookie Plus and open the browser popup or options page.
2. Select your synchronization mode: either self-hosted or platform-based.
3. Configure and authorize your sync server or login to the Cookie Plus platform account.
4. Add the domains whose cookies and local storage you want to monitor and synchronize.
5. Cookie Plus continuously observes data changes on monitored domains and syncs encrypted updates across connected devices.
6. Use the options interface to manage devices, adjust sync frequency, trigger manual syncs, and review logs.
7. Remove domains or revoke device access anytime to stop data synchronization and securely erase remote data.

Privacy: - No personal data collected. All synchronization data undergoes end-to-end encryption, with handling strictly limited to the minimum domain, cookie, and storage information necessary for synchronization operations. See our privacy policy for full details.