HTTP/3 vs ParkingCrew
Head-to-head usage across the sites we track.
Top sites by authority
HTTP/3 · ParkingCrew · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
217
0
Open Page Rank 8+
3,633
0
Open Page Rank 7+
17,286
0
Open Page Rank 6+
37,596
0
Open Page Rank 5+
73,412
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
HTTP/3 · ParkingCrew · share of sites in each country using one or the other
United States
1,284,004
164
India
592,975
316
United Kingdom
436,501
67
Brazil
418,679
81
Indonesia
328,375
147
Canada
321,328
51
Germany
316,957
63
Italy
305,727
68
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | HTTP/3 | ParkingCrew |
|---|---|---|
| LCP | 1.9 s | 2.9 s |
| INP | 75 ms | 0 ms |
| CLS | 0 | 0 |
| TTFB | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
ParkingCrew to HTTP/3
| Domain | When |
|---|---|
| kingtogel.net | May 2026 |