WP Performance

Cache and performance plugin for WordPress. Page caching, CSS/JS/HTML optimization, modern image formats and Core Web Vitals tooling, with a React admin.

Version 2.0 is a ground-up rewrite: no third-party PHP dependencies, its own cache engine, asset parser and minifiers.

Features

Caching page cache served before WordPress loads, block cache for parts of a page, cache preloading, browser caching, GZIP, optional Redis object cache.

CSS minify, combine, load without blocking, remove unused CSS per page, critical CSS, self-host Google Fonts, resource hints.

JavaScript minify, combine, defer, delay until interaction, disable per file or per page.

Media lazy load, responsive images, missing width/height for CLS, LCP preload with fetchpriority, WebP and AVIF conversion.

Also HTML minification, database cleanup, CDN rewriting, one-click presets, health checks, restore points, WP-CLI, multisite.

Add-ons for Cloudflare, Varnish and link prefetching ship with the plugin.

Requirements

• WordPress 6.9 or newer
• PHP 8.1 or newer

Development

composer install     # autoloader
npm install          # build toolchain
npm run build        # compile the admin app and blocks into build/
npm start            # watch mode

build/ and vendor/ are generated and not committed, so both commands are required before the plugin will run from a clone.

Tests

composer test              # every suite
php tests/run.php cache    # suites matching "cache"

The suites are standalone: they stub the slice of the WordPress API the code touches, so they need no database and no WordPress install. See tests/README.md.

Translations

bin/make-translations.sh

Regenerates languages/wpp.pot, compiles each .po, and builds the script-translation JSON the admin bundle loads. Requires WP-CLI and GNU gettext.

Reporting bugs

Open an issue on GitHub.

License

GPL-2.0-or-later.