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PDP-003Product page · decisionMedium

Sticky add-to-cart on long product pages

Sticky ATC button appears when user scrolls past the initial ATC on long pages.

Check my store for this rule →Cite this
Free · no card · runs all rules at once · judged on 39 stores · updated
77%of the audited stores we could judge fail this rule
9 pass0 partial30 failPublished audits · September 2026
Stores judged
39
of 40 published audits
Score weight
0.7pts
of the 100-point score
Page share
30%
of the score is the product page

What earns each verdict

Same outcomes on every UXFix rule · how verdicts work
✓ Pass9

Sticky ATC visible when user has scrolled past the primary ATC on a page longer than 2 viewports.

✕ Fail30

No sticky ATC on a page long enough to warrant one.

not assessable is recorded when the rule applied but the store could not be judged on it (bot protection, a region lock, a step we could not reach), and not applicable when the store has nothing for the rule to judge. Those stores are left out of every number on this page, never guessed. Why we do that
Why it matters

On this long product page, the Add-to-Cart button disappears once the shopper scrolls down. There is no sticky bar that keeps it reachable.

Shoppers scroll deep into reviews and details, decide to buy, and then have to scroll all the way back up. Every extra scroll is a chance to get distracted and leave.

That sentence is the one a failing store sees in its own UXFix report.How rules are weighted and scored →
39 audited stores, one dot each
30 fail
PassPartialFail

Every published UXFix audit this rule could be judged on, as of 23 Sep 2026. A count of real stores, not a simulation of yours.

How we test it

Scripted walk, fresh signed-out browser · the full walk
  1. 1Fresh browserSigned out, cookies cleared, desktop and mobile viewports, the store's live theme.
  2. 2Open a productA real, in-stock product page, found the way a shopper finds one.
  3. 3Judge this ruleAgainst the standard above, on what a shopper can see.
  4. 4Record the verdictPass, partial or fail, saved with the screenshot it was judged on.
What the agent looks for
Sticky ATC button appears when user scrolls past the initial ATC on long pages.
Confidence
The rulebook rates this check’s confidence Medium. When the agent is not sure, the rule is recorded as not assessable rather than guessed.
Not judged
1 of 40 published audits: the rule did not apply or could not be judged. Dropped, never guessed.

The numbers behind the rule

Published UXFix audits · more statistics
Published audits failing this rule
and 18 more, newest audit first.
No pictures here: this rule is judged by doing something, a click or a typed error, and a still picture of the page before it would show nothing. Audits run from 20 September 2026 capture the moment itself where the probe can reach it.
Where this rule sits among 103 UX rules
Most-failed rank
#18
Score weight rank
#70
Fail rate
77%

Score weight: a fail costs 0.7 pts of of the 100-point score; a partial costs half that. Most-failed rank is among the 79 rules with enough published audits to report a rate.

The fix

The same steps a failing store sees in its report

A pass means: Sticky ATC visible when user has scrolled past the primary ATC on a page longer than 2 viewports.

Severity
Medium
Score gain
+0.7pts
Page
Product page

Score gain is roughly what a fail-to-pass change adds; rules that could not be judged are left out, which can move it a little. Re-run a free audit after the change ships to confirm the verdict moved.

Checklist for the pass
0 of 3

Tick each step as you ship it. The audit judges the live store, so re-run it once all of them are done.

Every store that fails this rule

The 30 audited stores that fail Sticky add-to-cart on long product pages, with each store's published score and the day it was audited.
#StoreScoreAuditedPublished audit
1Leathermanleatherman.com65Open audit
2Archeryworldarcheryworld.co.uk52Open audit
3Bxbx.eu46Open audit
4Barnesandnoblebarnesandnoble.com61Open audit
5Mujimuji.us61Open audit
6Tupperwaretupperware.com60Open audit
7Thebrickthebrick.com61Open audit
8Wpswingswpswings.com57Open audit
9Lavernelaverne.com60Open audit
10Benettonbenetton.com58Open audit
11Keenfootwearkeenfootwear.com56Open audit
12Everlaneeverlane.com62Open audit
13Tomstoms.com52Open audit
14Bodenboden.com64Open audit
15Eddiebauereddiebauer.com62Open audit
16Reebokreebok.com58Open audit
17Reebokreebok.com57Open audit
18Kathmandukathmandu.com.au63Open audit
19Bentibrandbentibrand.com66Open audit
20Ladounladoun.com41Open audit
21Toysrustoysrus.com57Open audit
22Brewdogbrewdog.com56Open audit
23Zulilyzulily.com61Open audit
24Mejurimejuri.com65Open audit
25Fashionphilefashionphile.com63Open audit
26Timextimex.com54Open audit
27Citstorescitstores.com65Open audit
28Enviafloresparadifuntosenviafloresparadifuntos.com56Open audit
29Wpfactorywpfactory.com70Open audit
30Tentreetentree.com58Open audit

What our auditors say about this rule

On a long page the buy button scrolls away exactly when the reading has done its work. A sticky bar keeps the decision one tap from wherever the shopper finished convincing themselves.
Abdulhameid Grandoka, Co-founder, UXFix

Written by the person who audits this rule, and reviewed every quarter.

Keep going

All rules →
RulePDP-002
Add-to-cart CTA above the fold on mobileProduct page · High ›
RulePDP-004
Shipping cost or estimate discoverable from PDPProduct page · Critical ›
RulePDP-005
Delivery/arrival date estimate shownProduct page · High ›
RulePDP-006
Stock/availability state explicit (in stock, low stock, out of stock)Product page · High ›
RulePDP-009
Selected variant state unambiguous (visual + text confirmation)Product page · Medium ›
RulePDP-011
Product title includes brand + descriptive attributes (not SKU-only)Product page · Low ›
RulePDP-013
Quantity selector present and easy to use (tap-friendly on mobile)Product page · Low ›
RulePDP-015
Image zoom available on desktop and mobileProduct page · Medium ›
Cite this

«30 of 39 online stores audited by UXFix fail the rule "Sticky add-to-cart on long product pages" (PDP-003) as of September 2026. UXFix, uxfix.ai/audits/rules/sticky-add-to-cart»

Rule record · JSON
Dataset →
{
  "id": "PDP-003",
  "name": "Sticky add-to-cart on long product pages",
  "area": "pdp",
  "severity": "medium",
  "weight": 0.723,
  "published_audits": {
    "judged": 39,
    "pass": 9,
    "partial": 0,
    "fail": 30
  },
  "updated": "2026-09-23"
}
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