PWA vs SPDY
Head-to-head usage across the sites we track.
Top sites by authority
PWA · SPDY · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
209
0
Open Page Rank 8+
3,783
0
Open Page Rank 7+
16,776
1
Open Page Rank 6+
33,347
1
Open Page Rank 5+
58,360
3
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
PWA · SPDY · share of sites in each country using one or the other
United States
358,243
20
Germany
185,405
9
Brazil
181,749
9
India
176,225
71
United Kingdom
153,237
11
France
135,069
6
Italy
108,633
6
Canada
104,982
8
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | PWA | SPDY |
|---|---|---|
| LCP | 1.9 s | 2.3 s |
| INP | 75 ms | 100 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.