Reported optimal characters (including spaces) per line:
| Publication (alphabetical) | Ideal | Acceptable |
| Baymard Institute | 50-60 | 50-75 |
| WebTypography.net | 66 | 45-75 |
This is a much discussed issue and I don’t want to revive the debate here. This is intended to be a quick resource listing the various opinions on the topic. If you want to read into the theories or reasoning you may click on the links above and read the articles.
If you have an additional resources to add to the list please leave them in the comments below.