How Does a Website Grader Work? 4 Simple Steps

How does a website grader work? In four steps: it loads your page, runs a long list of checks, groups the results into categories and converts the points into a grade. Once you know each step, a score stops being a mystery and becomes a to-do list.

If you have ever asked yourself how does a website grader work, this post goes behind the scenes of the website grader built into website.ky, so you can judge any grading tool, including ours, on how it actually reaches its number.

Step 1: The grader loads your real page

A trustworthy website grader fetches your live page the way a visitor and a search engine do. That means it reads the HTML, follows the redirects, checks the security of the connection and notes how long things take. It looks at what is public, so it never needs a password and cannot see anything behind a login.

If a tool only asks you questions and never loads your site, it is guessing.

Step 2: It runs the checks

This is where the work happens. WebGuru runs more than 40 checks across search, speed, mobile and security. Examples include whether each page has a clear title and description, whether the site uses HTTPS, whether it works on a phone and whether search engines can read what the business is.

Each check earns full points, part points or no points. A page title that is present but far too long might earn part points, which is why scores move in small steps as you fix things.

Step 3: The checks roll up into categories

Checks are grouped so you can see where the weakness is. Each category carries a share of the 100 points, so a weak area costs you more when it counts for more. The categories are SEO, Google listing, visitor experience, speed, mobile, security and AEO (AI-readiness).

Not every category applies to every site. If we cannot match a Google listing to your website, that category is left out and your score comes from the rest. You are not penalised for something we could not measure.

Step 4: Points become a grade

Your score is the points earned divided by the points available, shown out of 100. The grade follows the score: A for 90 to 100, B for 80 to 89, C for 70 to 79, D for 50 to 69 and F below 50, with plus and minus grades inside each letter. Our guide to what a good SEO score is explains how to read your own band.

What a website grader does not do

So, how does a website grader work in practice, and where does it stop? Understanding the answer also means knowing its limits. It does not see your traffic, it does not predict where Google will rank you and it cannot judge the quality of your writing the way a customer can. It measures how well the site is built and presented.

Different graders weigh categories differently, so scores are not comparable between tools. Compare your own site with itself over time instead. That is the purpose of a rescan after each fix.

How to get more from the grade

1. Start with the lowest category.
2. Fix high-impact items first.
3. Rescan to confirm the gain.

For a thorough list of what to check, use the website audit checklist. For titles, descriptions and the SEO basics, read how to improve website SEO. Google explains the signals it uses in its guide to creating helpful content.

How does a website grader work out your Google listing score?

For local businesses, the website is only half of how customers meet you. When your business has a Google listing, a thorough grader reads it as well: the rating, the number of reviews, whether photos and opening hours are present, how complete the description is and how you compare with nearby competitors in the same category. These details become their own category with a share of the 100 points.

If your website and listing cannot be matched, the grader leaves that category out and scores the rest, so a missing match never counts against you.

A worked example

Imagine a hair salon scores like this: SEO 14 of 20 points, speed 6 of 15, mobile 9 of 10, security 10 of 10 and visitor experience 11 of 15. The grader adds the points earned (50) and divides by the points available (70), which gives about 71 out of 100, a C. The speed category is the biggest gap, so that is the best place to work.

After the owner compresses the images and removes two unused plugins, speed rises to 12 of 15. The new total is 56 of 70, roughly 80, a B-. That jump from one afternoon's work shows why rescanning is useful: you see the exact gain from each fix.

Why two graders can give different scores

Each tool chooses its own checks and weights. One may count page speed heavily and ignore your Google listing, another may do the reverse. That is why you should compare a tool with itself over time, not with a different tool's number. Our guide on what a good SEO score is explains how to read a score within one system.

What happens to your data

A responsible website grader reads only public information, stores the report so your link keeps working and does not need access to your site's admin area. It also should not share your results with others without your say-so. Reports on website.ky are reachable by anyone who has the private link, so share it with people you trust.

Frequently asked questions

Does the grader slow my site down? No. It loads your pages roughly like a visitor would, and that is a very small amount of traffic.

Can it check pages behind a login? No. It sees only what the public can see.

How long does it take? About 15 seconds for a typical site.

To see the process on your own site, use the free tool and read the categories one by one.

Now that you know how does a website grader work from start to finish, try the free website grader on your own site and see the four steps in action.