Features
Each page covers one row of the comparison table: what the feature is, why browsers restrict it, how each browser behaves by default, and how that has changed over time.
- Classification of "known trackers" How does the browser decide which domains are trackers?
- Blocking of known trackers Does the browser stop requests to known trackers or fingerprinting scripts from loading at all? Brave Blocked Chrome No restrictions Edge Limited Firefox Limited Safari Limited
- Cookies in 3rd party context Can a site embedded on another site read and write its cookies? Brave Partitioned Chrome No restrictions Edge Limited Firefox Partitioned Safari Blocked
- Cookies in 1st party context Are the site's own cookies deleted or capped? Brave Limited Chrome Limited Edge Limited Firefox Limited Safari Limited
- Other browser storage in 3rd party context Can embedded content use localStorage, IndexedDB and similar storage? Brave Partitioned Chrome Partitioned Edge Partitioned Firefox Partitioned Safari Partitioned
- Other browser storage in 1st party context Is the site's own non-cookie storage deleted or capped? Brave No restrictions Chrome No restrictions Edge No restrictions Firefox Limited Safari Limited
- CNAME cloaking Does the browser see through a first-party subdomain that points to a third-party service? Brave Blocked Chrome No restrictions Edge No restrictions Firefox No restrictions Safari Limited
- Fingerprinting Does the browser change or hide the values scripts use to fingerprint the device?
- Referrer How much of the previous page's URL is shared with other sites?
- Other Other protections that affect tracking and measurement.