How a scan works
A scan takes about a minute. This is what happens in that minute, and how far to trust what comes out.
It opens your site the way a visitor does
Once on a desktop screen, once on a phone. It waits for loaders and intros to finish, accepts the cookie banner so it does not cover the page, and scrolls from top to bottom.
You get both captures at full length and a recording of the scroll.
It measures what the page is made of
Fonts, colours, spacing values, borders, shadows and gradients, icons, images, the words, and the links. Links are clicked, so a button that goes nowhere is found and shown.
It checks whether the site lives on motion
Some sites only make sense while they move: scroll-driven scenes, one screen that changes with the wheel. A flat picture is a poor witness there. Those sites are detected and judged from the recording.
It looks for named tells
Gradient text, a small label above every heading, an icon in a rounded tile on top of each card. These patterns have names, kept in impeccable's open catalogue. Each one found is marked on your capture.
Tells are evidence. They do not set the score: a careful site can trip twenty of them and a lazy one can trip none.
One model describes, another scores
The first model writes down what it sees, aspect by aspect, without judging. You can read its description on your result.
The second scores each of the thirteen aspects from 1, slop, to 5, clean. It scores against a rubric written from the sites Rais rated by hand.
The score
The slop score is how far the thirteen aspects are from 5, on average, as a percentage.
- 0 to 19%
- Clean
- 20 to 39%
- Mostly clean
- 40 to 59%
- Mixed
- 60 to 79%
- Sloppy
- 80 to 100%
- Slop
How far to trust it
A result says who rated it. Sites Rais rated show his own scores.
Every other site shows the model's, and the model is not him yet. On sites it had never seen it lands about 20 points from his score on average, and it is kinder than he is to the worst ones. Read a model score as a first opinion and look at the evidence under it.
It gets closer as he rates more.
What it does not do
It does not read your code, test your speed or check accessibility. It scans the one page you paste, not the whole site. It cannot see pages behind a login, and sites that block automated visits cannot be scanned.