TL;DR:
First-party analytics is served from your own domain and keeps the data under your control; third-party analytics loads from an external provider's domain and sends data there. First-party is more private, harder for ad blockers to strip, and often more accurate. Google Analytics is third-party; privacy-first tools can often be run first-party, and self-hosted ones always are.
The first-party versus third-party distinction is about where the analytics runs and who ends up with the data. It affects your visitors' privacy, how much of your traffic you actually see, and whether an ad blocker quietly removes your measurement.
The difference
| First-party | Third-party | |
|---|---|---|
| Served from | Your own domain | An external provider's domain |
| Data control | Yours | Shared with the provider |
| Ad blockers | Harder to block | Often blocked by name |
| Example | Self-hosted or same-domain tools | Google Analytics |
Why it matters
- Privacy: first-party keeps visitor data out of an external ad ecosystem.
- Accuracy: third-party scripts are common ad-blocker targets, so they can miss a chunk of traffic; first-party is harder to strip.
- Ownership: self-hosted, first-party analytics means the data never leaves your infrastructure.
Third-party is not automatically bad, a hosted privacy-first tool is technically third-party but stores no personal data and sells nothing. The sharper line is what the provider does with the data. Google Analytics is third-party and feeds an ad ecosystem; a cookieless tool, hosted or self-hosted, does not. Self-hosting any of the open-source tools makes them fully first-party.
Open Analytics is cookieless and can be self-hosted for fully first-party data, or use the hosted version, which still stores no personal data.
See how it worksFrequently asked questions
- What is the difference between first-party and third-party analytics?
- First-party analytics is served from your own domain and keeps data under your control; third-party analytics loads from an external provider and sends data there. First-party is more private, harder for ad blockers to remove, and (when self-hosted) keeps data entirely on your infrastructure.
- Is first-party analytics more accurate?
- Often, yes, because third-party analytics scripts are common ad-blocker targets and can miss the traffic of privacy-conscious visitors. First-party scripts served from your own domain are harder to block, so they tend to capture more of your real traffic.
- Is Google Analytics first-party or third-party?
- Third-party: it loads from Google's domain and sends data into Google's ecosystem, and it is frequently blocked by ad blockers by name. Privacy-first tools can often run first-party, and any of the self-hostable ones are fully first-party when you host them yourself.