# The Storefront Lab HQ blog Source: https://storefrontlabhq.com/blog/ ## [How long should you run a Shopify A/B test before calling it?](2026-10-10-shopify-ab-test-duration-guide/index.md) Calling a test too early is the most common way to ship a losing variant. How long Shopify tests actually need, what sample size matters, and the peeking problem that quietly ruins results. Experiment notes and conversion guides for Shopify storefronts. Newest first. * [How to A/B test product images on your Shopify store](2026-10-06-shopify-product-image-ab-test/index.md) Product images are the biggest lever on most product pages, and the easiest to test badly. Which image variables to test, how to keep tests clean, and the metrics that actually tell you which photo wins. * [Should you test one thing at a time on Shopify?](2026-10-05-shopify-test-one-thing-at-a-time.md) Testing one variable at a time is the textbook rule, but slow stores cannot afford it. When single-variable tests are worth the wait, when multivariate or sequential testing is the pragmatic choice, and how to avoid fooling yourself either way. * [How long should you run a Shopify A/B test?](2026-10-04-shopify-ab-test-duration/index.md) Ending a test too early is the most common A/B testing mistake. Sample size, business cycles, and the minimum durations that give trustworthy results. * [How do you A/B test review placement on Shopify product pages?](2026-10-03-shopify-review-placement-ab-test/index.md) Reviews lift conversion, but where they sit decides how much. The positions worth testing, what to measure, and the mistakes that invalidate the result. * [Should you A/B test your Shopify checkout?](2026-10-02-shopify-checkout-ab-test/index.md) Checkout is the highest-leverage page and the hardest to test. What you can actually change on Shopify checkout, the traffic you need, and the tests worth running first. * [How do you know when a Shopify A/B test result is real?](2026-10-01-shopify-ab-test-statistical-significance/index.md) A test result is trustworthy when the math and the calendar agree: enough conversions, full business cycles, and segment-level consistency. The three ways most Shopify tests get called too early. * [Should your first Shopify A/B test be on the product page or the cart?](2026-09-30-shopify-first-ab-test-placement/index.md) Start with the product page, unless cart abandonment is extreme. The traffic math, the decision-point argument, and why the homepage is almost never the right first test. * [How do you run a price test on Shopify?](2026-09-29-shopify-price-test-methods/index.md) Geo splits, time-based designs, and presentation tests. The price-test methods that actually work on Shopify, and the guardrails each needs. * [How do you A/B test Shopify search?](2026-09-28-shopify-search-ab-test/index.md) The unit is the query, not the visitor. Testing head terms with a real split, measuring the tail with before-and-after, and the search metrics that matter. * [What should you test first on a low-traffic Shopify store?](https://storefrontlabhq.com/blog/shopify-low-traffic-testing-priority/index.md) Low-traffic stores cannot run textbook A/B tests: the math never converges. Test big, obvious things instead, and use methods that do not need statistics. * [How do you test Shopify speed on real phones, not just lab tools?](https://storefrontlabhq.com/blog/shopify-real-device-speed-testing/index.md) Lab scores are consistent but controlled. Field data plus a mid-range Android on a throttled connection shows what customers actually experience. * [How long should you run a Shopify A/B test before calling a winner?](https://storefrontlabhq.com/blog/shopify-ab-test-duration/index.md) Most Shopify A/B tests are stopped too early or run too long. Set the duration from traffic and effect size, keep two full weeks as the floor, and stop peeking at the results mid-test. * [What to look for in Shopify session replays](https://storefrontlabhq.com/blog/shopify-session-replay-product-pages/index.md) Session replays show what shoppers actually do on your product pages: rage clicks, dead clicks, confusing variant selectors, and form fields that fight back. A practical watch list. * [A checkout abandonment audit for Shopify stores](https://storefrontlabhq.com/blog/shopify-checkout-abandonment-audit/index.md) Most checkout abandonment is not a mystery: unexpected costs, forced account creation, limited payment options, and mobile form friction. An audit walks the checkout the way a customer does, measures each step, and fixes one thing at a time. * [Measure a Shopify script before removing it](https://storefrontlabhq.com/measure-shopify-script-cost/index.md) * [How do you run a Shopify performance experiment without fooling yourself?](https://storefrontlabhq.com/shopify-performance-experiment-method/index.md) * [Test Shopify performance template by template](https://storefrontlabhq.com/shopify-performance-test-template-by-template/index.md) * [Shopify Core Web Vitals: LCP, INP, and CLS Explained](https://storefrontlabhq.com/shopify-lcp-inp-cls-guide/index.md) * [Shopify heatmap tools](https://storefrontlabhq.com/shopify-heatmap-tools/index.md) * [Best Shopify product image sizes](https://storefrontlabhq.com/best-shopify-product-image-sizes/index.md) * [Product page elements that convert](https://storefrontlabhq.com/product-page-elements-that-convert/index.md) * [Improve Shopify conversion rate](https://storefrontlabhq.com/improve-shopify-conversion-rate/index.md) * [How to A/B Test a Shopify Store Without a Data Team](https://storefrontlabhq.com/shopify-ab-testing-guide/index.md)