Headline & Copy A/B Tests: What 45 Measured Results Show

Of 45 measured headline and copy tests, 44 reported a positive result and 1 was flat.

The most useful pattern: rewriting the product title around the benefit or outcome won every time it was tested, across several of Dave Diederen's stores.

Dave's 'Achieve [outcome] with [product]' title gained +15.61% conversion rate, and a benefit-led headline for an LED face mask gained +10.47%.

Plain wording also beat clever wording: 'Shop Now' beat creative CTA copy, and a shorter guarantee line won by +13.08% CVR.

Below, the results are grouped by pattern, with the flat test and the conflicts named. The grid lists every result and idea.

measured results
0–0won vs lost or flat
ideas to test

What counts as headlines and copy

This collection covers product titles, hero headlines, product descriptions, CTA and cart copy, guarantee wording, ad-angle tests on advertorials, and what sits around the title (ratings, badges, price).

Some results are full page redesigns that included new copy; those are flagged below.

The win/loss record

44 positive results, 1 flat, no recorded losses.

30 of the 45 are on the product page, and most of the isolated copy tests come from Dave Diederen.

Where headlines and copy were tested

  • Product page: 30 tests
  • Homepage: 5 tests
  • Landing page: 4 tests
  • Cart: 2 tests
  • Navigation, collection page and other: 4 tests

Biggest wins and their numbers

Benefit-led product titles

Angle and description copy

Dave Diederen rewrote descriptions around the risks of not using the product: +32.75% CVR, +41.90% RPV.

Oliver Kenyon's pain-point benefit copy reported +$159K/month, and Oliver's pain-relief vs longevity angle test on dog supplement advertorials reported +28% CTR and +$116k/month.

Plainer and shorter

Tests that lost, were flat or conflict

Dave Diederen's review rating placed above the product title was flat: no conversion change, +1.30% RPV, +1.49% AOV.

That conflicts with two similar Dave tests that won: star rating and review count above the title (+8.14% CVR) and review stars moved above the title (+9.26% CVR).

The same change can win on one store and do nothing on another.

Copy alone can also be a small part of a redesign win.

Dave's homepage hero redesign gained +72.15% RPV, but its copy-only variant gained +8.43% RPV.

Milos's product page redesigns (+81% CVR, +33% CVR, +50% RPV) changed images and layout too.

Design patterns that won

  • Write the product title as an outcome: what the customer gets.
  • Add one or two benefit words to an existing title.
  • Name the cost of not buying in the description.
  • Use plain CTA copy over clever copy.
  • Cut copy that adds doubt, like long guarantee wording or extra cart lines.

How to change headlines and copy on Shopify

Product titles affect search, feeds and SEO, so many stores test a display headline in the product template rather than the real product title.

Descriptions, CTA text and cart lines can be edited in the theme or its language settings.

Most A/B testing apps can swap text without code.

How to test it on your store

Hypothesis: rewriting the product title as "Achieve [outcome] with [product]" will raise conversion rate.

Test one copy change at a time, use conversion rate and RPV as metrics, and size it with the sample size calculator.

The untested ideas suggest a next step: test several hero copy angles (benefit, problem-aware, outcome, feature) against each other.

Questions

Do benefit-led product titles increase conversions?

In every test here, yes. Dave Diederen's 'Achieve [outcome] with [product]' title gained +15.61% conversion rate, and switching from product-first to benefit-first wording gained +11.67% revenue per visitor.

What copy test should I run first?

The product title is the most-tested and most consistent win in this archive.

A smaller option is a shorter guarantee line: Dave Diederen's 'or your money back' wording gained +13.08% conversion rate.

Does putting the review rating above the product title help?

It depends on the store. Dave Diederen ran it three times: two wins (+8.14% and +9.26% conversion rate) and one flat result with no conversion change.