GSAP vs Inertia
Head-to-head usage across the sites we track.
Top sites by authority
GSAP · Inertia · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
97
0
Open Page Rank 8+
1,446
0
Open Page Rank 7+
5,938
0
Open Page Rank 6+
12,399
0
Open Page Rank 5+
23,449
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
GSAP · Inertia · share of sites in each country using one or the other
United States
374,319
13
India
135,440
12
United Kingdom
119,878
13
Germany
113,182
18
France
112,048
10
Italy
105,125
9
Brazil
87,855
14
Canada
85,143
10
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | GSAP | Inertia |
|---|---|---|
| LCP | 2 s | 2.3 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 800 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.