By primary language
Average detected errors per home page across 17 languages, against a million-page average of 56.1.
The range here is the widest segmentation in the study, from 46 errors to 136.2. Language is a proxy for regional web conventions, popular platforms, and local regulation rather than anything about the language itself.
1. English46
18% below average
2. Dutch46.5
17.1% below average
3. German46.9
16.4% below average
4. French58.5
4.2% above average
5. No language specified60.3
7.5% above average
6. Portuguese61.1
8.8% above average
7. Japanese62.2
10.8% above average
8. Spanish64.3
14.7% above average
9. Italian64.4
14.8% above average
10. Turkish66.2
17.9% above average
11. Polish68.7
22.5% above average
12. Arabic69.3
23.5% above average
13. Indonesian72.5
29.2% above average
14. Vietnamese74.5
32.8% above average
15. Russian78.1
39.2% above average
16. Korean94.6
68.7% above average
17. Chinese136.2
142.8% above average