CRO Glossary
Above-the-Fold vs Full-Page Redesign
A test design choice between changing only visible-on-load content versus overhauling the entire page layout and copy.
This isn't a statistical concept but a scoping decision teams make before building a test. Do you isolate a change to the hero, headline, and CTA visible without scrolling, or do you redesign the whole page including sections further down? The choice affects how cleanly you can attribute a lift to a specific element versus a holistic experience shift.
Smaller, above-the-fold-only changes are faster to build, easier to isolate causally, and let you run more tests per quarter. Full-page redesigns can unlock bigger wins because they fix compounding friction points, but they cost more to build, take longer to ship, and make it harder to know which change drove the result if it wins — or which change to blame if it loses.
A common pattern is to run a full-page redesign as a big swing test, then follow up with iterative above-the-fold-only tests to fine-tune whichever variant wins. This gives you both the large potential lift and the diagnostic clarity afterward.
Teams with low traffic often prefer full-page redesigns since they need a bigger effect size to reach significance in a reasonable test duration, whereas high-traffic sites can afford to run many small, isolated tests sequentially.
Related terms
Above vs Below Median Split
A segmentation technique that divides users into two groups at the median of a metric to compare high and low engagers.
Qualitative Feedback Loop
A recurring process of collecting and acting on user comments, session recordings, and survey responses to inform test hypotheses.
Experiment Metadata
The structured record of who, what, when, and how for a test — hypothesis, owner, dates, variants, and metrics used to track and audit it.
Pre-Test Analysis
The upfront work of validating traffic, metrics, and baseline data quality before launching an experiment.
Above-the-Fold vs Below-the-Fold Messaging Hierarchy
How the order and prominence of value-proposition messaging is split between the visible screen and the rest of the page.
Experiment Contamination
When a control or variant group is unintentionally exposed to the other condition, corrupting the comparison.
See this in the wild
ABWatcher watches how top teams apply above-the-fold vs full-page redesign.
Live A/B tests at 1,000+ high-converting brands, with plain-English hypothesis and takeaway.