2 articles, every claim sourced
Every extension claims to respect your privacy. The claim is worth nothing on its own; what is worth something is that a false privacy declaration in a browser store is a policy violation with a consequence attached.
START HEREBrowser Extensions That Keep Your Data On Your Machine- the permission list and privacy declaration are checkable in about a minute once you know what to look at.
A declaration is not an audit. But it is a commitment the developer made to the store, and checking it beats trusting a marketing page.
Six tab managers compared on what actually matters: where your data lives, whether an account is required, how you get your tabs back out, and who each one suits. Including where OneTab is still the right answer.
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How to tell whether an extension actually stores your data locally, which permissions deserve a second look, and what the store listings do and do not tell you.
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