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10 Critical Mistakes When Launching an E-Commerce Site (and Fixes)

Most e-commerce failures are not product problems — they are experience and infrastructure problems. The 10 most expensive mistakes we see, with fixes.

1. Slow pages

Every second beyond 3 on mobile turns ad spend into vapor. Fix: image optimization (AVIF/WebP), caching layers, headless architecture. In the Lumen Store rebuild we cut load time to 0.9s and lifted conversion 38%.

2. Forced registration at checkout

Fix: guest checkout always on; offer account creation after the order.

3. Multi-step, cluttered checkout

Fix: single-page checkout, address autofill, saved cards. Target: cart to confirmation in 60 seconds.

4. Weak site search

Searchers convert 2–3× more — yet most search boxes only match exact words. Fix: typo tolerance, synonyms, instant suggestions.

5. Hidden shipping costs

The #1 stated reason for cart abandonment. Fix: show shipping policy on product pages; use a "free shipping over X" progress bar.

6. Thin product content

Fix: multiple photos, video, size tables, real reviews and product FAQs. Content cuts returns.

7. Mobile as an afterthought

70–80% of traffic is mobile. Fix: design mobile-first; one-hand checkout.

8. Fragile stock & campaign infrastructure

A site that crashes on campaign day crashes the marketing plan. Fix: stock reservation, queues, load tests before going live.

9. SEO postponed to "after launch"

URL structure and category architecture are painful to change later. Fix: bake SEO into the architecture — see our 12-point guide.

10. Managing without data

Fix: funnel tracking, cart abandonment analysis, a weekly metrics routine. You cannot improve what you do not measure.

How many of these does your store have? Request a free e-commerce audit — we will return a prioritized fix list.

#E-Ticaret#Dönüşüm#UX

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