Swift Performance is an all-in-one WordPress cache and optimization plugin that combines page caching, CSS and JavaScript optimization, critical CSS generation, database optimization, and image optimization in a single tool. Unlike modular plugins that handle caching separately, Swift does everything from cache preloading to JS minification with its unique Async Execute system. The plugin includes a Setup Wizard, Plugin Organizer for per-page plugin disabling, and full WooCommerce, Cloudflare, and Varnish support. The Pro version adds unlimited image optimization, Compute API, critical icon fonts, and WooCommerce session caching. Swift is a feature-rich alternative to caching plugins like WP Rocket with more granular optimization controls.
Competitive Features
- Page caching — full-page cache with automatic preloading, mobile detection, and logged-in user cache support
- CSS optimization — combine, minify, and generate critical CSS automatically per page for above-the-fold rendering
- JavaScript optimization — combine, minify, defer, and use Async Execute to load scripts in non-blocking chunks
- Database optimization — clean expired transients, orphaned metadata, spam comments, and optimize database tables
- Plugin Organizer — disable plugins on specific pages, admin screens, or AJAX actions to reduce resource usage
- Critical CSS generation — generate critical CSS on the fly for each page, ensuring above-the-fold content loads instantly
- Lazy loading — lazy load images and iframes with Smart Lazyload for better compatibility
- Image optimization — unlimited image compression with batch processing (Pro)
Key Features
- Cache warmup — prebuild cache for all pages automatically with adjustable speed settings
- CDN support — works with Cloudflare, Varnish, and custom CDNs with file-type exclusion rules
- DNS prefetch — specify domains for early DNS resolution to speed up third-party resource loading
- Async Execute — advanced JS execution that loads combined scripts in parallel chunks
- WebP conversion — convert and serve WebP images automatically (Pro)
- WooCommerce optimization — session caching, cart fragments disable, and scheduled sales compatibility (Pro)
- Google Analytics bypass — load analytics locally to reduce external DNS lookups
- Heartbeat control — reduce WordPress heartbeat API frequency to lower server load
Comparison with Competitors
Swift Performance vs WP Rocket
| Feature | Swift Performance | WP Rocket |
|---|---|---|
| Page caching | Yes | Yes |
| Critical CSS | Automatic per page | Yes |
| Async JS execution | Async Execute | Standard defer |
| Plugin organizer | Per-page disabling | Not included |
| Database optimization | Built-in | Built-in |
| Image optimization | Unlimited (Pro) | Not included |
| Setup wizard | Yes | Yes |
Swift Performance vs LiteSpeed Cache
| Feature | Swift Performance | LiteSpeed Cache |
|---|---|---|
| Server requirement | Any server | LiteSpeed server |
| Page caching | Yes | Yes |
| Critical CSS | Automatic | Requires API |
| Plugin organizer | Yes | Not included |
| Image optimization | Unlimited (Pro) | Included |
| Async JS execution | Async Execute | Defer + Combine |
| WooCommerce session cache | Pro | Yes |
Recommended Stack — pair Swift Performance with Imagify for dedicated image compression alongside Swift’s caching and CSS optimization for maximum site speed.
Official Changelog
Version 2.3.7.3
Release Date: December 13, 2024
- Fix: Load textdomain on init for translation compatibility.
Version 2.3.7.2
Release Date: December 3, 2024
- Fix: Security improvements.
Version 2.3.7.1
Release Date: August 6, 2024
- Fix: Minor bugfixes and stability improvements.
Frequently Asked Questions
Is Swift Performance compatible with WooCommerce?
Yes, Swift Performance is WooCommerce-friendly with full page caching support. The Pro version adds session caching for cart and checkout pages plus the ability to disable cart fragments AJAX calls.
Does Swift Performance generate critical CSS?
Yes, the plugin automatically generates critical CSS for each page to ensure above-the-fold content renders instantly. The CSS is generated on the fly and cached for repeat visits.
Can I disable plugins on specific pages?
Yes, the Plugin Organizer feature lets you disable plugins on specific pages, URL patterns, admin screens, and AJAX actions. This reduces resource usage by running only necessary plugins per page.
What is Async Execute in Swift Performance?
Async Execute is a unique feature that loads combined JavaScript files in small non-blocking chunks. Instead of waiting for a large combined JS file to download, each piece executes as soon as it arrives, reducing render-blocking time.
Does Swift Performance support Cloudflare?
Yes, Swift Performance integrates with Cloudflare including API token authentication, cache purging, and CDN support. It also supports Varnish and custom CDN setups.
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