Since 2020, readers have used Blacklight, our pioneering website privacy inspector tool, to run more than 18 million scans. Previously, Blacklight detected tracking pixels from Google and Meta.

We’ve updated The Markup’s privacy tool to help you understand how sites are tracking you through TikTok and X pixels.

An investigation by The Markup found that pixel collects data from many students using other websites, including high schoolers who sign up for financial aid and college testing. Then the code shares ...

A BBC investigation suggests TikTok’s updated tracking pixel may collect data from websites across the internet, meaning even people without an account could be monitored.

Healthcare startups are scrambling to reassess how their websites and apps are built, and how third parties may, inadvertently or not, be putting patients’ protected health information at risk. In ...

In the world of digital marketing, tracking pixels have long been the secret sauce for companies trying to understand their customers. These tiny, invisible bits of code are embedded in websites and ...

We’ve updated Blacklight, The Markup’s privacy inspector, to help you understand how sites are tracking you.