EXECUTIVE SUMMARY
Good web design isn’t taste; it’s measurable. High-performing websites share ten principles: clear purpose, strong hierarchy, readable type, speed, mobile-first layouts, obvious navigation, visible trust, accessibility, consistency and focused calls to action. Score your own site against each and you’ll know exactly where the money is leaking.
KEY INSIGHTS
- Every principle here is testable; none is a matter of opinion.
- The five-second test catches most failing homepages.
- Speed and mobile experience are design principles, not technical afterthoughts.
- One page, one primary call to action; competing buttons split conversions.
Good design is measurable
Ask ten people what makes a website “good” and you’ll get taste. Ask what makes one perform and you get testable answers: does it load fast, read clearly, work on phones, build trust and make the next step obvious? This article is the quality checklist that sits on top of our plain-English guide to web design: not what design is, but what separates the sites that win work from the sites that just exist.
The 10 principles
1. Clear purpose, instantly
The five-second test: a stranger lands on your homepage and must be able to say what you do, who for, and what to do next. If the answer is a slogan and a stock photo, the design has failed at its first job.
2. Visual hierarchy that guides the eye
Size, contrast and position should rank the page’s content by importance, headline first, action last, everything else supporting. When everything shouts, nothing gets heard.
3. Typography built for reading
Body text at 15 to 16px minimum, comfortable line lengths, real contrast. Most website text exists to be read on a phone in imperfect light; design for that, not for the studio monitor.
4. Speed as a feature
Aim for loads around two seconds and a PageSpeed score of 90+. Slow pages shed visitors before the design is even seen, which is why speed is a first-class principle of design that ranks, not an engineering footnote.
5. Mobile-first, genuinely
Most of your visitors are on phones, and Google judges the mobile site first. Designing desktop-first then squeezing down produces the cramped, fiddly experience that our mobile guide exists to fix.
6. Navigation nobody has to think about
Predictable labels, shallow menus, contact one click from everywhere. Navigation is a promise about where things are; good design keeps it.
7. Trust made visible
Reviews with names, real photography, accreditations, specific numbers. Visitors decide whether to believe you before deciding whether to buy from you, and design controls what evidence they see first. It’s the thinking behind every project in our portfolio.
8. Accessible to everyone
Contrast ratios, keyboard navigation, alt text, sensible focus states, the WCAG guidelines in practice. Accessibility widens your market, protects you legally and, without exception, improves the experience for everyone else too.
9. Consistency as a system
Buttons that always look like buttons, spacing that follows a rhythm, one design language across every page. Consistency reads as competence; a site that changes its rules page by page reads as chaos.
10. One clear call to action
Every page should have a primary next step, visually dominant and repeated at the right moments. Five competing buttons don’t give visitors choice; they give them a reason to defer. Journey design like this belongs to UX, and it’s where design most directly becomes revenue.
When everything on the page shouts, nothing gets heard. Hierarchy is the discipline of choosing what deserves the volume.
Score your own site
| Principle | Quick test | Pass? |
|---|---|---|
| Purpose | Stranger explains your business in 5 seconds | |
| Speed | PageSpeed 90+, loads ~2s on mobile data | |
| Mobile | Everything usable one-handed on your phone | |
| Trust | Real reviews and photos above the fold | |
| Action | One obvious next step per page |
Failing two or more usually means the design is costing you enquiries daily. Whether that calls for targeted fixes or a rebuild is the subject of our 12 warning signs guide, and the fix itself is what our redesign service does for a living. Prefer to see the standard before committing? Start with a free homepage mockup.
Frequently asked questions
Isn’t good design subjective?
Aesthetics have range; performance doesn’t. Two very different-looking sites can both pass every principle above. What’s not subjective is whether visitors can read, trust and act.
Which principle should I fix first?
Speed and mobile, because they gate everything else: nobody experiences your hierarchy or trust signals on a page they abandoned. Then clarity of purpose, then calls to action.
How much does a site built to these principles cost?
Every website from our Manchester web design studio is quoted on its page quantity and custom features. Every principle above is standard in our builds, not an upgrade.
