SPDY vs Webpack
Head-to-head usage across the sites we track.
Top sites by authority
SPDY · Webpack · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
196
Open Page Rank 8+
0
3,368
Open Page Rank 7+
1
13,768
Open Page Rank 6+
1
25,926
Open Page Rank 5+
3
43,405
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
SPDY · Webpack · share of sites in each country using one or the other
United States
24
298,515
India
78
154,177
Germany
10
132,021
United Kingdom
12
123,342
France
8
109,944
Brazil
10
99,932
Canada
8
96,644
Netherlands
8
78,103
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | SPDY | Webpack |
|---|---|---|
| LCP | 2.2 s | 2 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.