CoverManager vs Slice
Head-to-head usage across the sites we track.
Top sites by authority
CoverManager · Slice · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
1
Open Page Rank 8+
2
5
Open Page Rank 7+
4
6
Open Page Rank 6+
4
6
Open Page Rank 5+
4
7
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
CoverManager · Slice · share of sites in each country using one or the other
United States
68
4,861
Spain
1,271
17
Italy
106
15
United Kingdom
74
19
Indonesia
18
75
France
70
13
Portugal
48
12
Mexico
42
16
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CoverManager | Slice |
|---|---|---|
| LCP | 2.3 s | 1.5 s |
| INP | 100 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 700 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.