Free tools
Tracker Check
Type an address. We list every third-party tracker on the page: pixels, analytics, ad networks, and the mystery hosts nobody can name.
How to use it
- Open Tracker Check under Tools and enter any public http or https address.
- Press Expose them. The read takes a few seconds.
- Read the verdict, then the named trackers, then the strangers list, then the working stiffs earning their keep.
How the verdict works
Clean means nobody watches the visitors. Light means a few identified watchers. Busy means several companies get a ping on every visit. Crowded means a crowd follows every visitor around the page.
What it reads
- Scripts, frames, images, and stylesheets from outside hosts.
- Known trackers by fingerprint: analytics, pixels, ads, heatmaps, chat.
- Functional third parties, listed separately: payments, chat, privacy-first counting.
The check reads the raw page. Tag managers can load more trackers at runtime than any static read can see, so a quiet report means quiet markup, not a quiet page.
Limits
Five free checks a day per visitor. Tarsier itself shows up as functional: no cookies, nothing to hide.