A website redesign is one of the few projects that can quietly destroy years of SEO in a single afternoon — or double your conversion rate in a month. The difference is rarely design talent; it is whether anyone worked through a proper website redesign checklist before the old site went dark. Here are the 25 checks we run on every rebuild, grouped into the five phases where redesigns are won or lost.
Use it as a working document: every item is phrased so you can literally tick it off. If you are hiring an agency for the rebuild, hand them this list and watch how they react — comfort is a good sign.
Phase 1 — Before anything gets designed
Most redesign damage is baked in before the first mockup, because nobody recorded what the old site was quietly doing well. Benchmark first, change second.
- 1 Export every URL on the current site (crawl it — don’t trust the sitemap alone)
- 2 Record which pages rank and for which keywords (Search Console → Performance)
- 3 Benchmark current traffic, conversions, and page speed so “better” is measurable
- 4 Define what the redesign must achieve in numbers — leads, sales, speed — not adjectives
- 5 Decide what stays: content that ranks is an asset, not clutter to purge
Phase 2 — Protect the SEO you already own
Rankings live at URLs. Change the address without a forwarding notice and Google treats your best pages as deleted. This phase is the single most common redesign disaster — and the most preventable.
- 6 Keep existing URLs wherever possible; stability beats elegance
- 7 Build a 301 redirect map for every URL that must change — 100% coverage, no orphans
- 8 Carry over titles, meta descriptions, and schema for pages that rank
- 9 Preserve internal links between pages (they carry authority, not just navigation)
- 10 Keep the staging site noindexed — and diarise removing that block at launch
Phase 3 — Design for conversion, not applause
A redesign that wins compliments and loses enquiries has failed. Every layout decision should trace back to the numbers you set in Phase 1.
- 11 One clear primary action per page — call, book, buy, enquire
- 12 Design mobile-first; most of your visitors will never see the desktop version
- 13 Keep proven conversion elements (forms, phone placement, trust signals) unless data says otherwise
- 14 Make speed a design constraint — every hero video and font weight is a tax on loading
- 15 Check accessibility basics: contrast, keyboard navigation, alt text, focus states
Phase 4 — The technical pass
These are the checks that separate a professional rebuild from a re-skin. None of them are visible in a design review; all of them show up in rankings and revenue later.
- 16 Unique title tag and meta description on every page of the new build
- 17 One H1 per page with a logical heading hierarchy beneath it
- 18 Compress and lazy-load images; give every one descriptive alt text
- 19 Re-implement analytics and conversion tracking before launch, not after
- 20 Test the new build’s Core Web Vitals against your Phase-1 benchmark
Phase 5 — Launch day and the week after
Launches fail in the follow-through. The site going live is the midpoint of this phase, not the end of the project.
- 21 Remove the staging noindex and confirm the live site is crawlable
- 22 Test every 301 from the redirect map on the live domain
- 23 Submit the new sitemap in Search Console and watch coverage for errors
- 24 Click-test every form, checkout, and tracked conversion on real devices
- 25 Watch rankings and traffic daily for two weeks — dips beyond ~10–15% need investigating, fast
The short version
Benchmark everything before you touch anything. Redirect every URL you change — all of them. Design for the action, not the applause. Run the technical pass nobody sees. And treat launch week as part of the project. Do those five things and a redesign becomes what it should be: an upgrade, not a gamble.
Not sure the site needs a full rebuild yet? Read the five signs a website is costing you customers first — sometimes a focused fix beats a redesign. If it is time, our guides on what websites cost and how to choose an agency cover the two questions that come next. And if you’d like the 25 checks run against your current site before you commit, request a pre-redesign review — our web design team will send back what we find within a working day, whether or not you rebuild with us.
Website redesign FAQs
Will redesigning my website hurt my SEO?
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How often should you redesign a website?
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How long does a website redesign take?
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How much does a website redesign cost?
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What is the difference between a redesign and a refresh?
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What should I do before redesigning my website?
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Why do websites lose traffic after a redesign?
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