How to fix tabindex on PrestaShop

Steps for PrestaShop

1. Connect via FTP/SFTP or use the Admin File Manager. Navigate to themes/<your-theme>/templates/ and search all .tpl (Smarty) files for 'tabindex'.
2. Edit the offending .tpl file and remove or set the tabindex to 0. Always work in a child theme or custom theme to avoid losing changes on updates.
3. Also check any installed modules (modules/<module-name>/views/templates/) for positive tabindex values and override them via the theme's module template override folder.
4. Clear the PrestaShop cache: Admin → Advanced Parameters → Performance → 'Clear cache'. Verify with keyboard navigation.

<![CDATA[<!-- ❌ WRONG: positive tabindex breaks focus order -->
<button tabindex="3">Add to Cart</button>
<a href="/sale" tabindex="1">View Sale</a>
<input type="email" tabindex="2" placeholder="Your email">

<!-- ✅ CORRECT: remove attribute or use 0; rely on document order -->
<a href="/sale">View Sale</a>
<input type="email" placeholder="Your email">
<button>Add to Cart</button>

<!-- ✅ CORRECT: non-native interactive element added to normal tab flow -->
<div role="button" tabindex="0" onclick="openMenu()">Menu</div>

<!-- ✅ CORRECT: focus target for JS only, not in tab flow -->
<div id="modal-heading" tabindex="-1">Special Offer</div>
]]>

What is tabindex?

The `tabindex` attribute tells a browser how an element should behave when a user presses the Tab key to navigate a page by keyboard. A value of `0` means "include this element in the normal tab order," while a value of `-1` means "exclude it from tab order but allow programmatic focus." A positive value — like `tabindex="1"`, `tabindex="2"`, etc. — forces that element to be focused *before* everything else on the page, regardless of where it sits in the HTML. This almost always creates a confusing, broken keyboard experience because the visual order and the focus order no longer match.

Keyboard navigation is essential for people who cannot use a mouse — including users with motor disabilities, screen-reader users, and power users who rely on the Tab key. When positive tabindex values are present, focus jumps unpredictably around the page, making it nearly impossible for these shoppers to browse products, fill in forms, or complete a checkout. This violates WCAG 2.1 Success Criterion 2.4.3 (Focus Order) at Level AA — the standard that most accessibility laws (ADA, European Accessibility Act, UK Equality Act) reference. Failing it exposes your business to legal complaints and litigation, and it directly harms conversion rates by locking out an estimated 15–20% of online shoppers who have some form of disability.

See the complete Tabindex guide for every platform and the full background.