CodeMirror vs iWeb
Head-to-head usage across the sites we track.
Top sites by authority
CodeMirror · iWeb · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
27
1
Open Page Rank 8+
234
1
Open Page Rank 7+
561
3
Open Page Rank 6+
855
3
Open Page Rank 5+
1,244
3
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
CodeMirror · iWeb · share of sites in each country using one or the other
United States
11,668
62
India
2,941
23
United Kingdom
2,594
22
Canada
2,406
21
Germany
1,988
36
Brazil
1,935
19
Spain
1,794
26
France
1,777
24
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CodeMirror | iWeb |
|---|---|---|
| LCP | 2.1 s | 1.3 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 500 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.