How is the overall score calculated?

It is a weighted blend of the 8 pillar scores, each out of 100. Speed counts for 20%, SEO 18%, Security 15%, Mobile 12%, Design 10%, Accessibility 10%, Best practices 8% and Content 7%.

What do the letter grades mean?

The same scale applies to every pillar and to the overall score: 97 and above is A+, 93 is A, 90 is A-, and so on down in bands, with anything under 60 graded F.

Why does a pillar show a dash instead of a grade?

A dash means we could not measure that pillar for this scan. We do not grade what we did not measure.

How We Score and Grade a Website

Scoring

How we score and
grade a website

Every scan runs 130+ checks, scores 8 pillars out of 100, blends them into an overall score and turns each into a letter grade. Nothing here is hidden.

The 8 pillars

What counts, and how much

Pillar	Weight	What it covers
Speed	20%	Page load and Core Web Vitals.
SEO	18%	Titles, headings, indexing, structured data and links.
Security	15%	HTTPS, certificate and security headers.
Mobile	12%	Viewport and how the page behaves on a phone.
Design	10%	Layout, readability and visual consistency.
Accessibility	10%	Whether people using assistive tech can use the page.
Best practices	8%	General web hygiene, such as mixed content.
Content	7%	Amount of content and how readable it is.

Letter grades

From A+ to F

Grade	Score
A+	97 to 100
A	93 to 96
A-	90 to 92
B+	87 to 89
B	83 to 86
B-	80 to 82
C+	77 to 79
C	73 to 76
C-	70 to 72
D+	67 to 69
D	63 to 66
D-	60 to 62
F	0 to 59

Severity

How serious is an issue?

Critical. Fix first. It is actively hurting search visibility, security or usability.
High. A significant problem that should be fixed soon.
Medium. Worth fixing, but not urgent.
Low. A small improvement with a small effect.
Insight. Information worth knowing. Nothing is broken.

Questions

Scoring,
answered straight

How is the overall score calculated?: It is a weighted blend of the 8 pillar scores, each out of 100. Speed counts for 20%, SEO 18%, Security 15%, Mobile 12%, Design 10%, Accessibility 10%, Best practices 8% and Content 7%.
What do the letter grades mean?: The same scale applies to every pillar and to the overall score: 97 and above is A+, 93 is A, 90 is A-, and so on down in bands, with anything under 60 graded F.
Why does a pillar show a dash instead of a grade?: A dash means we could not measure that pillar for this scan. We do not grade what we did not measure.

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How we score andgrade a website