Great for session migration and device emulation without the usual bugs.
If you are a developer or tester who frequently needs to replicate web sessions across different environments or simulate mobile views, this extension makes the process incredibly straightforward. I’ve used other cookie editors and user-agent switchers before, but they usually fail to handle third-party frames or cause domain conflicts during import. This tool handles both flawlessly. [1]
What makes it way better than the alternatives:
Complete session portability: It lets you export your active session—including all active third-party frame cookies and your current User Agent—into a single standardized JSON file, making it incredibly easy to migrate identities between machines. [1]
Conflict-free restoration: When you import a saved session, the extension automatically detects and wipes existing conflicting cookies before applying the new parameters, giving you a clean testing state instantly without manual cache clearing. [1]
Accurate environment emulation: Instead of just changing the basic network headers, it also handles the modern navigator.userAgentData API (Client Hints), so modern websites can't easily detect that you are spoofing the device environment. [1]
It is extremely lightweight (around 31KiB), runs entirely locally on your machine with no external network requests, and includes a great one-click environment reset button to instantly return your browser to default. A perfect, hassle-free addition to any developer's toolkit.
