WP Manifestindependent plugin directory
manifest / performance / spc-prefetch-connector

SPC Prefetch Connector

Designed to work alongside Super Page Cache Free and Pro. Makes WordPress feel like a static site by layering three browser-native performance technologies: the Speculation Rules API (Chrome 109+), instant.page fallback (Firefox / Safari), and the View Transitions API for smooth page animations.

by Nahnu Plugins · github.com/jaimealnassim/spc-prefetch-connector · website

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Install

Download source zip No release zip yet

This is the repository archive. It installs, but the folder name will carry the branch suffix and updates will not flow.

Install straight from GitHub with WP-CLI:

wp plugin install https://github.com/jaimealnassim/spc-prefetch-connector/archive/refs/heads/main.zip
Updates itself. It ships its own updater, so new versions appear under Dashboard → Updates.
Readme github.com/jaimealnassim/spc-prefetch-connector ↗

Makes WordPress feel like a static site.

A free WordPress plugin by Nahnu Plugins that layers three browser-native performance technologies on top of Super Page Cache (Free and Pro) to make page navigation feel instant.

How it works

Layer Browser support What it does
Speculation Rules: prefetch Chrome 109+ Downloads the HTML of a page on hover. Zero JS overhead — the browser handles it natively in the network stack.
Speculation Rules: prerender Chrome 108+ Fully executes the page in a hidden renderer on mousedown. When the user clicks, Chrome activates it with zero latency.
instant.page fallback Firefox, Safari, Edge Prefetches HTML via <link rel=prefetch> on hover (65 ms delay). Touchstart on mobile.
View Transitions Chrome 111+, Safari 18+ Wraps navigation in a 160 ms fade or slide animation. When prerender is ready the transition is truly instant.
Analytics guard All browsers Queues GTM / GA4 / Facebook Pixel during prerender and replays on real activation. Prevents inflated pageview counts.
Preconnect hints All browsers Completes DNS + TLS handshake for third-party origins before they are needed.

Requirements

  • WordPress 6.0+
  • PHP 7.4+
  • Super Page Cache (Free or Pro) — recommended but not strictly required

Installation

  1. Download the latest release zip from the Releases page
  2. In WordPress admin go to Plugins → Add New → Upload Plugin
  3. Upload the zip and activate
  4. Go to Settings → SPC Prefetch to configure

Super Page Cache — Recommended Settings

When running alongside this plugin, configure SPC as follows for best results:

SPC Setting Recommended Why
Prefetch URLs on hover OFF This plugin handles prefetch better with Speculation Rules + prerender. If left ON, it auto-detects SPC and defers, but you lose Speculation Rules and prerender entirely.
Defer JS (Pro) Either Pro's Defer JS explicitly skips type="module" scripts. We also hook spc_defer_script as a backup. Safe either way.
Delay JS (Pro) OFF Does not skip type="module" scripts — could break instant.page and view-transitions. We auto-exclude our scripts via an option filter as protection, but OFF is cleaner.
Remove Unused CSS (Pro) Fine Operates on cached HTML only. No effect on our scripts.

Features

Speculation Rules API (Chrome 109+)

Injects a `