Check 11 / 16 LOW impact In the full checklist
Mobile bottom nav: home / search / cart / account
What this check is
On a phone, the top of the screen is the hardest place to reach. A bottom bar with the four destinations shoppers actually use removes a scroll from every navigation decision.
How to implement it
Add a fixed bottom bar with home, search, cart and account, respect the safe-area inset on notched devices, and show the cart count. Keep the header simple and make sure the bar does not cover the sticky add-to-cart or the consent panel.
How to verify it
On a 390px viewport confirm all four targets are at least 44px tall, none of them overlaps the sticky cart bar or the cookie banner, and the cart count updates after adding an item.
All 197 checks, one Google Sheet
This page is the summary. The full checklist carries the priority, the impact score and the tool link for every check — all 197 of them, across 14 categories, as a Google Sheet and CSV with lifetime updates.
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