Saito FAQ

Saito FAQ adds questions/answers to posts, pages, products, and
WooCommerce product categories — most existing FAQ plugins cover the
first three content types but not categories, since there is no native
post-meta equivalent for a taxonomy term.

Main features

• Coverage: posts, pages, products, product categories — extendable to
  other content types or taxonomies via the saito_faq_post_types and
  saito_faq_taxonomies filters.
• Admin: a FAQ box on the post/page/product edit screen, and the same
  field on the category edit screen — shared interface, add/remove
  questions in JavaScript, no page reload.
• Optional theme grouping: giving the same theme to several questions
  (e.g. “Shipping”, “The product”) automatically displays them under a
  shared tab on the front end. A single theme in use (or none): plain
  accordion, no unnecessary tabs.
• Display:
  • [saito_faq] — FAQ for the current context (the post/page/product being
    viewed, or a covered category archive page).
  • [saito_faq_all] — every FAQ on the site, grouped by title, for a
    centralized “Frequently Asked Questions” page.
  • Automatic display at the top of category archive pages (there is no
    content area to manually place a shortcode on this page type).
• FAQPage schema (JSON-LD) generated server-side, only where the
  content is actually visible: always on a covered category, only if
  [saito_faq] is placed in the content on a post/page/product — in line
  with Google’s structured data guidelines.
• Accessibility: accordion built on native <details>/<summary>
  (works even without JavaScript), left/right/Home/End arrow-key
  navigation between theme tabs (the
  ARIA Tabs pattern).