# Sitewide 'FREE SHIPPING' sticky banner: +8% purchases

- Outcome: Won
- Page type: Site-wide (Ecommerce)
- Elements: Shipping & delivery messaging, Announcement bars
- Test run by: [GrowthHit](https://liftarchive.com/practitioners/growthhit/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://www.convert.com/case-studies/growth-hit-free-shipping/
- Page: https://liftarchive.com/test/growthhit-sitewide-free-shipping-sticky-banner/

Adding a sitewide sticky banner announcing free shipping lifted completed purchases by 8%. GrowthHit ran this A/B test for a beauty ecommerce store where almost every product already shipped free, and it was published as a Convert case study. The result was reported at 90% confidence.

## Result

**+8% purchases**

- Completed purchases: +8%.
- Confidence was 90%, a lower bar than the usual 95%.

## Control

The original site, with no emphasis on free shipping.

## Variant

A sticky banner announcing FREE SHIPPING, shown on every page and every device.

## Why it likely won (our reading)

- Exit polls and surveys showed shipping cost was the top worry, even though nearly everything shipped free. Shoppers simply did not know.
- A sticky banner keeps the message in view on every page, so it reaches people before they abandon.
- Clearing up a doubt costs nothing to fulfil here, because the offer already existed.

## Caveats

The test ran for 15 days with 26,306 visitors per version, and the result was called at 90% confidence. A true lift may be smaller than 8%.

## How to run this test

- Hypothesis: If we state free shipping on every page, then more visitors will buy because surveys show shipping cost worries cause abandonment.
- Primary metric: Completed purchases
- Guardrail: Average order value
- Guardrail: Revenue per visitor
- Guardrail: Mobile bounce rate
- Who should test it: Stores that already offer free shipping but do not say so clearly, especially if surveys mention shipping costs. If shoppers already know shipping is free, a banner adds little.

---

Credit: GrowthHit ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/growthhit-sitewide-free-shipping-sticky-banner/).
Usage: Free to use, quote and build on, with credit and a link: name the practitioner or organization that ran the test and link to its LiftArchive page. The results belong to the practitioners who ran and shared them; the summaries and commentary are LiftArchive's.