The verdict in three sentences
A redesign built without a plan tanks traffic by 20-50% because URLs change, redirects go missing and titles get lost. A migration plan with exhaustive 301 redirects, title and H1 parity and a crawl diff protects your ranking. Done cleanly, traffic returns to normal within 2 to 8 weeks.
The migration checklist
Every skipped line is a traffic-loss risk. Here is the checklist to tick before any go-live:
| Step | Action | Risk if skipped |
|---|---|---|
| 1 | Map every old URL | Orphan pages, 404s |
| 2 | 301-redirect to the new URL | Lost SEO equity |
| 3 | Keep titles and H1 (parity) | Ranking drop |
| 4 | Preserve internal links | Lost link structure |
| 5 | Test on a staging environment | Bugs in production |
| 6 | Compare crawl before/after | Undetected gaps |
| 7 | Submit the new sitemap | Slow indexing |
301 redirects are the non-negotiable point: every old URL must point to its equivalent.
Reckless relaunch vs controlled plan
The difference is method, not budget. Comparison of risks and outcomes:
| Point | Reckless relaunch | Controlled plan |
|---|---|---|
| URLs | Changed with no redirect | 301 for every URL |
| Titles / H1 | Rewritten at random | Parity preserved |
| Go-live | Straight to production | Staging + crawl diff |
| Sitemap | Not resubmitted | Resubmitted immediately |
| Traffic drop | -20 to -50% | Avoided |
| Recovery | 3 to 6 months | 2 to 8 weeks |
A controlled plan costs a few extra days of work and avoids months of lost traffic.
Kolonell is looking for referral partners
Do you know businesses redesigning their site in Johannesburg or elsewhere? Become a Kolonell referral partner and earn a commission on every project signed thanks to you. 2026 rates:
| Segment | Sale commission | Recurring |
|---|---|---|
| Brochure site | 15% | + 5% recurring |
| E-commerce | 12% | — |
| Marketplace | 10% | — |
| Institutional | 8% | — |
A simple brochure site at 800,000 FCFA earns you 120,000 FCFA, plus 5% on the monthly maintenance. Just introduce us to the contact.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Aminata manages a school's site in Johannesburg, 45 well-ranked pages, 6,500 visits/month. An earlier redesign without redirects cost her 40% of traffic for 4 months, about 10,400 visits gone. Redone with a plan (301s for all 45 URLs, title parity, crawl diff), her new version keeps 96% of traffic by week 3. Avoiding the drop, during enrollment season, was worth dozens of applications.
FAQ
Why does a redesign tank traffic?
Because Google loses the link between your ranked old URLs and the new content. Without 301 redirects, accumulated authority is lost and positions collapse.
What is a 301 redirect?
It is a permanent redirect that transfers the old URL and nearly all its SEO authority to the new one. It is the central tool of a clean migration.
How long to recover if done right?
Usually 2 to 8 weeks, the time for Google to recrawl and reindex. A botched redesign can take 3 to 6 months to recover.
Do I need to keep exactly the same copy?
Not identical, but you must preserve the parity of titles, H1s and intent on pages that perform. We improve without breaking what already ranks.
What is a crawl diff for?
To compare the site structure before and after, spotting lost URLs, 404s and missing tags before Google sees them.
Let's talk about your project. We redesign your site while preserving your SEO traffic, or earn you a commission as a referral partner. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
