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ShuttleSites

Free website check · Technical health & visual design

Is your website ready for liftoff?

See what’s working, what’s slowing you down, and where to improve. Enter a page URL to check technical health and see how your design works on a phone and desktop.

Device to simulate

No signup needed. The technical audit and visual review can take up to two minutes. Public desktop and phone screenshots are sent to our algorithm for design assessment. Privacy details.

Four checks. A clearer next step.

What does your grade measure?

Performance

How quickly your page loads and becomes usable.

Accessibility

Automated checks for a more usable, inclusive page.

Best practices

Browser standards and common technical issues.

SEO

Technical basics that help search engines understand your page.

See your design through a fresh pair of eyes

Our algorithm reviews desktop and phone screenshots for mobile layout, visual hierarchy, typography, spacing, and imagery. You receive a separate design score, visible evidence, and suggested fixes. It is an assessment of the first screen, so it can miss details.

Plus, a free Code Health review

Look under the hood with HTML-Validate and Project Wallace. We check the collected HTML for structural issues and summarize your CSS, including colors, typography, and styling complexity. These findings help guide improvements; they don’t grade how attractive your site looks or change your Lighthouse scores.

Each check analyzes one public page in a simulated environment. Scores can vary between runs. Automated checks are a starting point; they do not replace an accessibility review or measure search rankings.

Independent scoring

Built by Shuttle.Technical scores by Lighthouse.

We make independent website testing simple, with a clear report and practical next steps.

The same checks for every website, including ours.

Independent criteria

Google Lighthouse generates your four category scores. We display those scores as returned. The separate design review uses a fixed rubric selected by Shuttle.

Hosted by Shuttle

We run Lighthouse on our servers and send public desktop and phone screenshots to our algorithm for the visual assessment.

Straightforward grading

Technical health is the equal average of the four Lighthouse scores. Design has its own weighted score: mobile layout 30%, hierarchy 20%, typography 20%, spacing 20%, and imagery 10%. Code Health adds findings without affecting either score.