I measure the web.
Analytics implementation, server-side data collection, and the standards behind them.
Latest writing
Guides
Work
webtracking.org
Open documentation of how web tracking actually works.
webtracking.org
ad.rip
One-URL audit of the ad tech on any page.
ad.rip
CookieScope
What a site really sets — inspected, verified.
cookiescope.com
Session receipt
Everything this site measured about your visit, itemized. Computed on your device, kept on your device. Print it and take it with you.