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WordPress utilities snippets

Hooks, shortcodes and theme helpers (GPL). 6 free snippets, each with an explanation and usage notes.
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Utilities snippets

WordPress · UtilitiesSticky mini audio player dockA fixed bottom audio dock that plays any link marked with data-audio and keeps playing while the visitor browses the page.audioplayerpodcast WordPress · UtilitiesSanitised inline SVG icon helperLoad SVG icons from the theme folder, strip anything unsafe with wp_kses and a strict allow-list, and print them inline.svgiconskses WordPress · UtilitiesRelated posts by shared taxonomy termsQuery the posts that share the most tags with the current one, fall back to its category, and cache the result in a transient.related-postswp-querytaxonomy WordPress · UtilitiesReading time and automatic table of contentsFilter the_content to add heading anchors, a linked table of contents and a words-per-minute reading time estimate.the-contenttocreading-time WordPress · UtilitiesLazy-loading YouTube facadeShow a thumbnail and play button instead of an iframe, and swap in the real embed only when the visitor clicks.youtubelazy-loadingperformance WordPress · UtilitiesOne-click demo content importerAn admin tools page that imports pages and posts from a bundled JSON file idempotently, behind a nonce and capability check.importdemo-contentadmin-page