When using the HTTP observatory, a grade system is used for scoring; i.e. F is bad, E is better, A+ is best. This is a scoring system most are familiar / comfortable with.
However, when using the TLS observatory, initially you score F, so make some improvements only to find your score's now I; which is worse, surely...?
In this case it seems that F means Fail (defined as Compatibility Level: Insecure) whilst I means Intermediate... Though I've not found this documented anywhere.
Amending the grading system to be consistent with the HTTP Observatory's approach, or providing a link to documentation explaining this grading / showing that I is better than F would remove some confusion.
When using the HTTP observatory, a grade system is used for scoring; i.e. F is bad, E is better, A+ is best. This is a scoring system most are familiar / comfortable with.
However, when using the TLS observatory, initially you score F, so make some improvements only to find your score's now I; which is worse, surely...?
In this case it seems that F means Fail (defined as Compatibility Level: Insecure) whilst I means Intermediate... Though I've not found this documented anywhere. Amending the grading system to be consistent with the HTTP Observatory's approach, or providing a link to documentation explaining this grading / showing that I is better than F would remove some confusion.