Python vs WebAssembly
Head-to-head usage across the sites we track.
Top sites by authority
Python · WebAssembly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
63
7
Open Page Rank 8+
810
25
Open Page Rank 7+
2,228
40
Open Page Rank 6+
3,569
66
Open Page Rank 5+
5,214
91
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Python · WebAssembly · share of sites in each country using one or the other
United States
24,352
475
India
22,541
309
Indonesia
17,283
284
Germany
14,576
273
Brazil
11,966
582
France
12,205
266
Spain
11,442
218
United Kingdom
10,983
313
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Python | WebAssembly |
|---|---|---|
| LCP | 2.1 s | 3.3 s |
| INP | 75 ms | 175 ms |
| CLS | 0 | 0.05 |
| TTFB | 1000 ms | 500 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.