Cookies Notice
M-Lab Cookie Notice
Last Updated: July 2026
Previous notices:
This notice explains how Measurement Lab ("M-Lab") uses cookies and similar technologies on its websites. It describes what these technologies are, why we use them, and your rights to control them.
What are cookies?
Cookies are small text files stored on your device when you visit a website. They help websites recognize your device across visits. This notice uses "cookies" broadly to include web beacons, pixels, and similar tracking technologies.
Your consent choices
When you first visit our site, a banner gives you the option to accept or reject non-essential cookies. Strictly necessary cookies are always active as they are required for the site to function. You can update your preferences at any time by clicking "Manage cookies" in the site footer.
We do not set analytics or functional cookies until you have given consent.
Cookies we use
| NAME | PROVIDER | PURPOSE | TYPE | EXPIRY |
| _session | M-Lab | M-Lab Maintains your session and privacy preferences | Necessary | Session |
| cookie_consent | M-Lab | Stores your cookie consent choice | Necessary | 1 year |
| ga, ga_* | Google Analytics | Distinguishes unique users and sessions; tracks page views and site usage | Analytics | 2 years |
| _gid | Google Analytics | Distinguishes users across sessions Analytics | Analytics | 24 hours |
Your Rights
Depending on your location, you may have rights including: the right to withdraw consent at any time, the right to know what data is collected, and (in California and other US states) the right to opt out of the sale or sharing of personal information. To exercise these rights, contact us at privacy@measurementlab.net.
Opting out of Google Analytics
You can opt out of Google Analytics tracking across all websites by installing the Google Analytics opt-out browser add-on.
No Sale of Data
M-Lab does not save your personal information and cannot sell or share it with third parties for cross-context behavioral advertising purposes.
Changes to this notice
We may update this notice from time to time. We will update the "Last updated" date at the top of this page.
Contact us
Questions about cookies? Email us at privacy@measurementlab.net or see our full Privacy Policy.