You don't always need a full redesign to sell more. Most e-commerce websites are losing sales to friction that's cheap to fix. Here are ten UX changes that reliably lift conversion — with the research behind them.
1. Make the primary action obvious
One clear, high-contrast 'add to cart' or 'buy' button per screen. If everything shouts, nothing converts. The button should be visible without scrolling on mobile, use your brand's strongest accent colour, and carry unambiguous text — 'Add to Bag' beats 'Proceed'. Every competing element you remove from that screen is a micro-conversion gain.
2. Speed up product pages
Compress product imagery to WebP and lazy-load below-the-fold images. A fast product page is one of the strongest single conversion levers in e-commerce — Portent's research shows conversion rates roughly halve between a one-second and a five-second load time. Serve product images from a CDN and defer any non-essential scripts on product pages specifically, since that's where the sale is won or lost.
3. Show price and shipping early
Surprise costs at checkout are the number-one cause of cart abandonment — consistently ranked first in Baymard Institute's research across thousands of checkout studies. Show your shipping cost (or 'free shipping on orders over X') on the product page itself, not only at checkout. If you can't offer free shipping, displaying the cost early means it's already mentally processed before the customer reaches the payment screen.
4. Reduce checkout steps
Every field and step is a chance to lose the sale. Baymard's research found that 28% of shoppers have abandoned a checkout purely because the site required account creation before purchase. Guest checkout is table stakes. Aim for five fields or fewer: name, email, address, and payment. Autofill support, a single-page checkout, and address lookup APIs all reduce friction measurably. Every field you add costs you a percentage of completions.
5. Build trust on the page
Reviews, a clear returns policy, and secure-payment cues do quiet, constant work. A product page with 20 verified reviews converts significantly better than the same page with none — even mediocre reviews outperform no reviews. Show your returns policy on the product page, not buried in a footer. Display payment provider logos (Visa, Mastercard, PayPal, Apple Pay) near the buy button — the visual familiarity reduces payment anxiety at the exact moment of decision.
6. Design mobile-first
More than 60% of e-commerce traffic is now mobile, yet mobile converts at roughly half the rate of desktop — and the gap is almost entirely UX friction. Tap targets need to be at least 44px tall. The checkout form should use the right keyboard type for each field (numeric for card numbers, email keyboard for email fields). The cart should be accessible without leaving the product page. Test your full checkout on a real phone before you consider it done.
7. Make search and filtering work
If people can't find it, they can't buy it. Baymard's research shows that shoppers who use site search convert at two to three times the rate of browsers — making search one of the highest-leverage features to invest in. Your search should handle misspellings and synonyms. Filters should update the page without a full reload. On mobile, filters should expand into a usable full-screen drawer. These aren't nice-to-haves; they're where a large share of high-intent buyers decide whether to stay or leave.
8. Reduce friction for returning customers
Returning customers convert at two to four times the rate of new visitors — yet most e-commerce sites treat them identically to strangers. Logged-in customers should see their saved addresses and payment methods auto-populated. A 'buy again' shortcut in order history removes an entire decision journey for repeat purchases. If your platform supports it, smart re-order suggestions based on past purchases can meaningfully lift revenue per returning session.
9. Use urgency and scarcity honestly
Low-stock indicators ('Only 3 left') and time-limited offers drive conversions when they're true. Dark patterns — fake scarcity, always-on 'sale' prices, fake countdown timers — erode trust over time and invite regulatory scrutiny in an increasing number of markets. Real urgency (a genuine last batch, a real shipping cutoff for a holiday) can lift conversion significantly on the affected products. Your customers are more sceptical than most e-commerce sites assume.
10. Optimise category pages, not just product pages
Most conversion work focuses on product pages, but category pages are where shoppers decide whether to browse deeper or bounce. A strong category page has featured products at the top, filters visible without scrolling on mobile, consistent image sizing, and a brief keyword-rich description — which also helps SEO. If your category pages are just an unsorted grid with no context, you're losing a significant share of visitors before they even see the products you want them to buy.
Measuring the impact: the right metrics
Add-to-cart rate and checkout completion rate are more actionable than overall conversion rate — they tell you exactly where in the funnel you're losing people. Use session recordings (Hotjar or Microsoft Clarity, both free) to watch real users navigate your store. The patterns you see — where they pause, scroll back, or abandon — are worth more than any survey. Run one change at a time, give it two to four weeks, and measure before and after. Gut instinct is a good starting point; data is how you confirm it.