Website redesign: 7 signs it is time for a change

If your website was created three or more years ago, there's a good chance it's already outdated. Not necessarily ugly, but technically behind, slow, poorly optimised for mobile and probably invisible on Google. Welcome to the wonderful web, where everything ages at full speed.

But a redesign isn't something to do on a whim. I've seen clients lose 60% of their SEO traffic after a botched rebuild. Before breaking everything, let's do this in the right order.

Seven signs it's time for a redesign

1. Your site isn't responsive. In 2026, more than 60% of web traffic comes from mobile. If your site doesn't work well on smartphones, you're losing most of your visitors. Google also disadvantages non-responsive sites in rankings. It's a deal-breaker.

2. It takes more than three seconds to load. 40% of users leave a site if loading takes more than three seconds. Three. Seconds. Test yours on PageSpeed Insights — I run all my clients' sites through it, and the results often raise eyebrows.

3. The design screams 2018. Homepage sliders, 3D-effect buttons, text over stock photography… If that describes your site, visitors notice. They won't say anything, but they'll look for a competitor who seems more professional. Not a good impression.

4. Your bounce rate is soaring. If more than 70% of visitors leave after viewing one page, something's wrong. The design may not inspire trust, the content may not match what people need, or the user experience may be a nightmare.

5. No HTTPS. The little padlock in the address bar. If your site still uses HTTP, Google Chrome displays "Not secure" to visitors. You might as well say "don't trust me". It's also an SEO ranking factor.

6. No conversions. Your site gets traffic but nobody contacts you, fills in a form or calls? Often the problem is a poorly designed user journey: no visible calls to action, no clear contact page, no social proof such as reviews or client logos.

7. The content hasn't changed since launch. A business website with the same five pages for three years looks inactive to Google. Search engines like fresh content. If you publish nothing, competitors who blog regularly will overtake you.

If three or more signs apply, it's time to take this seriously.

Steps to a successful redesign

1. Audit the current site (DO NOT SKIP THIS)

Before touching anything, take stock: which pages bring traffic? Which keywords rank? Where do visitors come from? This is CRUCIAL. Delete a page attracting 200 visitors a month without a redirect and you lose that traffic permanently. I've seen it so often it drives me mad.

Free audit tools: Google Analytics (traffic), Google Search Console (SEO rankings), PageSpeed Insights (speed), and Screaming Frog's free version (site structure). That's exactly the kind of audit I carry out for clients before any redesign.

2. Define your business objectives

Redesigning just to make things look nice is wasteful. Define what the new site should achieve: a certain number of quote requests each month? First-page ranking for "plumber Angoulême"? A bounce rate below 50%? Measurable objectives, not wishful thinking.

3. Write the project brief

No need for a 50-page document. List the pages to create, required features (form, blog, booking…), visual identity, content to migrate and redirects to set up. A good brief is the difference between a sound project and one that goes off the rails.

4. SEO migration (THE critical point)

Here's what 80% of web providers overlook: changing a page's URL breaks Google's connection. If /our-services/plumbing becomes /services/plumbing-heating, you need a 301 redirect from the old URL to the new one. For EVERY changed page. Without it, your SEO starts from scratch.

A redirect plan is the most important document in a redesign. More important than the mock-up. Seriously.

Realistic budgets

I'll be direct, because this is THE question everyone asks:

Small-business website (5–10 pages) : €1,500–€5,000, depending on design and feature complexity. At Semzen, my packages start at €990 for simple projects.

Business website with blog and SEO : €3,000–€8,000. A blog needs a content strategy, a management system and often on-page SEO.

E-commerce website : €5,000–€15,000 for a properly configured PrestaShop or Shopify store.

Beware of €500 quotes. At that price, you'll get a hastily installed WordPress template with no SEO optimisation or content, then spend the next six months wondering why nobody can find your site.

Common pitfalls

A provider who never mentions SEO. If your web designer never discusses search visibility, walk away. A beautiful site nobody finds is a shop window on an empty alley. I explain how to choose a good SEO consultant in another article.

"We'll deal with content later." Content MUST be planned BEFORE design. Not the other way round. Pages, copy and images all determine the site's structure.

The complete-rebuild reflex. Sometimes you don't need to redo everything. A CSS refresh, speed improvements, fresh content and a few user-experience adjustments may be enough. Less exciting than a complete rebuild, but often smarter, and five to ten times cheaper.

A website redesign is a serious project. Take time to audit, define your goals, protect your SEO and work with someone who understands business needs as well as code. If you'd like a second opinion on your current site, a first exchange by email is enough for an initial diagnosis.

Source: Web.dev — Core Web Vitals, Google 2025

Translated from the original French article. Publication dates, examples and figures refer to that original version.