AddEvent vs Bookly
Head-to-head usage across the sites we track.
Top sites by authority
AddEvent · Bookly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
5
1
Open Page Rank 8+
25
28
Open Page Rank 7+
65
49
Open Page Rank 6+
113
77
Open Page Rank 5+
159
99
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AddEvent · Bookly · share of sites in each country using one or the other
United States
588
1,014
Spain
135
766
Germany
150
745
United Kingdom
253
620
France
161
693
Italy
130
667
Netherlands
134
601
India
253
351
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AddEvent | Bookly |
|---|---|---|
| LCP | 1.9 s | 2.6 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 1500 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.