WP Manifestindependent plugin directory
manifest / performance / font-proxy-cache

Font Proxy Cache

Font Proxy Cache Wordpress Plugin

by solinter · github.com/solinter/font-proxy-cache

★ 0stars
0forks

Install

No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:

wp plugin install https://github.com/solinter/font-proxy-cache/archive/refs/heads/main.zip
Readme github.com/solinter/font-proxy-cache ↗

A WordPress plugin (WordPress 6.2+, PHP 7.4+) that serves external font dependencies from the site itself. The browser no longer contacts fonts.googleapis.com, fonts.gstatic.com or use.fontawesome.com. WordPress fetches those files once, keeps them as content-addressed objects in the persistent object cache (Redis) and serves them from /font-proxy/.... Nothing is written to disk.

<link href="//fonts.googleapis.com/css?family=Montserrat:regular&ver=7.1">
        ↓
<link href="https://example.com/font-proxy/<sig>/fonts.googleapis.com/css?family=Montserrat:regular">

Installation

  1. Copy the font-proxy-cache folder to wp-content/plugins/.
  2. Make sure a persistent object cache is enabled (see Requirements).
  3. Activate Font Proxy Cache under Plugins, or run wp plugin activate font-proxy-cache.

No configuration is needed. Status and cache management are under Tools → Font Proxy Cache.

Requirements

  • A connected persistent object cache. In practice that means the Redis Object Cache plugin with its object-cache.php drop-in enabled (Settings → Redis → Enable Object Cache, or wp redis enable). Other persistent object cache drop-ins should also work, but only Redis Object Cache has been tested.
  • Activation is refused without it. If the object cache later becomes unavailable, the plugin turns itself off and shows an admin notice. "Unavailable" covers three cases: the drop-in is removed, Redis is unreachable, or the group is listed in WP_REDIS_IGNORED_GROUPS.
  • If Redis goes down, the whole site is down, unless graceful mode is on. With WP_REDIS_GRACEFUL unset, the Redis Object Cache drop-in stops the whole site with "Error establishing a Redis connection" whenever Redis is unreachable, before any plugin loads. Define WP_REDIS_GRACEFUL as true in wp-config.php (or via WORDPRESS_CONFIG_EXTRA in the official WordPress Docker image) to keep the site running without Redis. This plugin then switches itself off.
  • While off:
    • pages keep their original CDN URLs
    • /font-proxy/ URLs still referenced by cached pages answer with a 302 to the CDN, with X-Font-Proxy-Cache-Error: font_proxy_cache_unavailable
    • nothing is cached anywhere

How it works

  1. Rewriting page output
    • style_loader_src rewrites enqueued stylesheets.
    • An output buffer rewrites hard-coded <link> tags and `