Added an announcement bar: +5.92% revenue per visitor
Test run byDave DiederenSyntra Labs
Commentary byLiftArchiveOur analysis, not theirsAdding an announcement bar lifted revenue per visitor by 5.92% and conversion rate by 5.41% in Dave Diederen's test. Revenue per visitor went from $1.85 to $1.96. The post does not say what the bar said.
- Revenue per visitor: +5.92% ($1.85 to $1.96). Each visitor brought in a bit more money.
- Conversion rate: +5.41% (3.23% to 3.40%). More visitors ended up ordering.
- Both ranges crossed zero (revenue per visitor -6% to +19%), so the result leans positive but is not certain.
- Average order value was not shown.
The change
The variant adds a site-wide announcement bar above the header.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The store with no announcement bar at the top of the page.
Variant
The same store with an announcement bar added above the header. The message on the bar was not shared.
Why it likely won
Our reading of the result, not the practitioner's claim.
- the top strip is seen on every page, so even a small message reaches every visitor.
- announcement bars usually carry an offer, free shipping threshold or guarantee, which gives shoppers a reason to buy now. We don't know which one this was.
- it's easy to assume a bar like this doesn't matter, and this test is a reminder to check.
Caveats: The bar's message, sample size, test length and confidence were not shared. Without the copy, it's hard to say what drove the lift.
Who ran it
Dave Diederen (@DaveDiederen) shared this test on X. The numbers and screenshots are theirs.
View the original post on X
How to run this test on your store
- Hypothesis
- If we add an announcement bar with our strongest offer or reassurance, then more visitors will buy because every page shows them a reason to order.
- Primary metric
- Revenue per visitor
- Guardrails
- Average order value
- Discount cost or margin
- Mobile above-the-fold space
- Who should test it
- Stores without a bar today that have a clear offer, shipping perk or guarantee to promote. If you have nothing meaningful to say there, the bar is just clutter.
Questions
Do announcement bars increase sales?
In this test, adding one lifted revenue per visitor by 5.92% and conversion by 5.41%. The ranges crossed zero, so it is a likely win, not a certain one.
What should an announcement bar say?
The post doesn't share the message used. Most stores use the bar for an offer, a shipping threshold or a guarantee, so test the one that matters most to your buyers.
Is an announcement bar worth testing?
Dave Diederen tested it instead of assuming it didn't matter, and it came out ahead. It's cheap to build, so it's worth a test.
Similar tests
@oliverkenyon@oliverkenyon@oliverkenyon@DaveDiederen@DaveDiederen@DaveDiederen