Preload
Dotjuice → Page speed → Preload
What this tab controls
Priority loading for your most important image, automatic cache warming after publishing, font preloading, and DNS/connection hints for third-party services.
Settings
| Setting | Default | What it does |
|---|---|---|
| LCP Image URL | Empty | The direct URL of your Largest Contentful Paint image — see below, this is the single most effective setting on this tab. |
| Preload Cache After Publish | On | The moment you publish or update a post, the plugin visits that page itself in the background a few seconds later, so the cache is rebuilt and ready before a real visitor arrives. Only meaningful if page caching is switched on. |
| Preload Web Fonts | On | Adds connection preconnect hints for Google Fonts if you use them, and preload hints for your site's own locally-hosted .woff2 font files, so fonts start downloading as early as possible instead of being discovered only once the browser reaches the CSS that references them. |
| Auto Prefetch Common Third-party Domains | On | Automatically detects whether your site actually loads from Google Fonts, Google Analytics, Google Tag Manager, Facebook, or jsDelivr, and adds a DNS prefetch hint only for the ones genuinely in use — so the browser resolves those domains' DNS in advance without wasting lookups on services you don't use. |
| Preconnect Origins | Empty | One origin per line (e.g. https://api.example.com) for any other third-party service your site depends on that isn't covered automatically above. Opens the connection (DNS + TLS handshake) in advance of the first real request to that origin. |
| Preload from Sitemap button | — | Visits every URL listed in your sitemap.xml in the background, warming the cache for your entire site in one go. |
Setting your LCP image — the highest-impact five minutes you'll spend
Your Largest Contentful Paint score — one of the three Core Web Vitals Google uses for ranking and reports directly in PageSpeed Insights — is almost always determined by one specific image: your hero banner, or whatever the single largest visible element is when a page first loads.
- Find the image you consider your "hero" for a page (or use the same one for a template that repeats across many pages).
- Right-click it in your browser and copy its image address, or find its URL in the Media Library.
- Paste that URL into LCP Image URL.
This does two things automatically: it tells the browser to fetch that specific image with maximum priority instead of waiting to discover it, and it also excludes that exact image from lazy loading — so the two settings never work against each other.
Warming your whole site at once
If you're setting this plugin up on a site that already has a lot of published content, click Preload from Sitemap after saving your settings. This visits every URL in your sitemap so the cache is ready for real visitors immediately, rather than each page only being cached the first time someone happens to land on it.
For a smaller site this finishes in moments; for a very large site with thousands of URLs, expect it to take a while, since every page is visited individually to build its cache.