JsObservable vs Swiper
Head-to-head usage across the sites we track.
Top sites by authority
JsObservable · Swiper · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
6
120
Open Page Rank 8+
39
2,426
Open Page Rank 7+
127
11,734
Open Page Rank 6+
211
25,079
Open Page Rank 5+
315
47,981
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
JsObservable · Swiper · share of sites in each country using one or the other
United States
852
427,105
India
401
239,537
Brazil
260
225,038
Germany
366
188,085
Japan
514
180,131
United Kingdom
399
161,180
France
305
159,069
Italy
320
145,736
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | JsObservable | Swiper |
|---|---|---|
| LCP | 1.7 s | 2.2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Sep 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.
Swiper to JsObservable
| Domain | When |
|---|---|
| moriartyfh.com | Jun 2026 |