AddEvent vs EventOn
Head-to-head usage across the sites we track.
Top sites by authority
AddEvent · EventOn · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
5
4
Open Page Rank 8+
27
68
Open Page Rank 7+
71
165
Open Page Rank 6+
118
281
Open Page Rank 5+
169
467
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AddEvent · EventOn · share of sites in each country using one or the other
United States
669
3,759
Germany
164
1,442
United Kingdom
288
1,182
Spain
167
1,255
France
213
1,176
Canada
278
913
Italy
150
983
India
296
680
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AddEvent | EventOn |
|---|---|---|
| LCP | 1.9 s | 2.3 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 1200 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.