PrivacyTests logo


open source tests of web browser privacy.

Pricing: Free
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What is PrivacyTests?

Most web browsers leak your identity and your browsing history, but some browsers are more leaky than others.

The goal of is to understand in detail: what data is each web browser leaking? Which web browsers offer the best privacy protections? is an open source initiative that subjects popular web browsers to a suite of automated tests. These tests are designed to audit web browsers' privacy properties in an unbiased manner. The results of the tests are made public to help users make an informed choice about which browser to use, and to encourage browser makers to fix leaks of private user data.

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