Booster Page Speed Optimizer vs Flits
Head-to-head usage across the sites we track.
Top sites by authority
Booster Page Speed Optimizer · Flits · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
1
Open Page Rank 8+
7
1
Open Page Rank 7+
10
1
Open Page Rank 6+
21
1
Open Page Rank 5+
36
4
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Booster Page Speed Optimizer · Flits · share of sites in each country using one or the other
United States
2,475
159
India
1,230
93
United Kingdom
1,012
68
Canada
750
75
Germany
736
41
Australia
631
43
France
628
40
Italy
606
38
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Booster Page Speed Optimizer | Flits |
|---|---|---|
| LCP | 1.7 s | 1.8 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 500 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.