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BlinkSpeed

v2.0.3 · by Blinkspeed

Boost your WordPress site speed with advanced AI optimization techniques.

View on WordPress.org

About this plugin

Boost your WordPress site speed with advanced AI optimization techniques. Improve Core Web Vitals, achieve higher scores on Google PageSpeed Insights and GTmetrix, and deliver a faster, smoother browsing experience for your visitors.

Features

  • CSS Optimization – Minification, combination, and critical CSS loading
  • JavaScript Optimization – Minification, combination, and deferred loading
  • HTML Caching – Page-level caching for improved performance
  • Image Optimization – WebP conversion and lazy loading
  • CDN Support – Content Delivery Network integration
  • Lazy Loading – Images, iframes, and videos
  • Asset Preloading – Preload critical assets like images and fonts for faster rendering
  • Admin Bar Integration – Quick cache purge from admin bar
  • Multisite Support – Network-wide and individual site management
  • Web Vitals Monitoring – Core Web Vitals tracking and logging
  • Change Logging – Track all settings changes

Free vs Premium Features

BlinkSpeed offers a powerful free version with essential performance optimizations. A premium license unlocks advanced AI-powered optimization features for the entire website.

Free Version (Included with Plugin)

The following features are available for free and work on all pages:

  • HTML page caching
  • CSS minification
  • JavaScript minification
  • JavaScript lazy loading
  • Image lazy loading
  • Browser caching
  • GZIP compression
  • Cache management tools
  • Multisite compatibility
  • Critical CSS generation (Home Page Only)
  • Advanced image optimization and WebP conversion (Home Page Only)

These optimizations help significantly improve page load speed and overall performance without requiring a license key.

Premium Version (Requires License Key)

The premium version unlocks advanced AI-powered optimization features for all pages:

  • HTML page caching
  • CSS minification
  • JavaScript minification
  • JavaScript lazy loading
  • Image lazy loading
  • Browser caching
  • GZIP compression
  • Cache management tools
  • Multisite compatibility
  • Critical CSS generation (All Pages)
  • Advanced image optimization and WebP conversion (All Pages)

Without a license key, critical CSS and advanced image optimization are available only for the homepage.

Why Premium Features Require a License

Some advanced optimizations rely on BlinkSpeed cloud services to process CSS, images, and performance data. These services require additional server resources, so a license key is required to enable them for the entire website.

You can activate your license key from:

BlinkSpeed General Settings License Key

Requirements

  • WordPress 5.0 or higher
  • PHP 7.4 or higher
  • PHP XML extension
  • PHP GD extension

Plugin Architecture

The plugin follows WordPress coding standards and modular architecture.

Main Files

  • blinkspeed.php – Main plugin file with header and initialization
  • includes/Plugin.php – Main plugin class orchestrating functionality
  • includes/Core.php – Core functionality and settings management
  • includes/Frontend.php – Frontend optimization handling
  • includes/Database.php – Database operations and table management

Admin Structure

  • admin/Admin.php – Main admin class handling menu and settings
  • admin/Admin_Bar.php – Admin bar cache purge functionality
  • admin/admin-page.php – Admin page template

Configuration

General Settings

  • Enable Optimization – Turn on/off optimization features
  • License Key – Enter your BlinkSpeed license key

CSS Optimization

  • CSS Optimization – Enable CSS minification and combination
  • Load Critical CSS – Inline critical CSS for above-the-fold content

JavaScript Optimization

  • JavaScript Optimization – Enable JS minification and combination
  • Load Combined JS – Choose when to load combined JavaScript files

HTML Caching

  • HTML Caching – Enable page-level caching
  • Cache Expiry Time – Set cache expiration time in seconds

Image Optimization

  • Convert JPG to WebP – Automatically convert JPG images to WebP
  • Convert PNG to WebP – Automatically convert PNG images to WebP
  • Lazy Loading – Enable lazy loading for images

Usage

Basic Setup

  1. Activate the plugin.
  2. Go to BlinkSpeed settings.
  3. Configure optimization preferences.
  4. Save settings.

Cache Management

  • Purge cache directly from the WordPress admin bar.
  • CSS/JS cache can be purged globally or per page.
  • HTML cache can be purged globally or per page.
  • Critical CSS cache can be purged per page.

Monitoring

  • View Web Vitals logs for performance insights.
  • Review change logs for settings updates.
  • Monitor cache sizes and performance.

Hooks

Actions

  • blinkspeed_init – Plugin initialization
  • blinkspeed_settings_saved – Settings saved
  • blinkspeed_cache_cleared – Cache cleared

Filters

  • blinkspeed_settings – Modify plugin settings
  • blinkspeed_cache_path – Customize cache paths
  • blinkspeed_exclude_urls – Exclude URLs from optimization

Database Tables

The plugin creates the following tables:

  • wp_blinkspeed_core_web_vitals – Stores Web Vitals performance data
  • wp_blinkspeed_change_logs – Stores settings change logs
  • wp_blinkspeed_site_urls – Stores site URL management data

Cache Structure

wp-content/cache/
├── critical-css/
└── bs-cache/

Performance Impact

  • CSS/JS Optimization – Reduces file sizes by 20-40%
  • HTML Caching – Improves page load times by 50-80%
  • Image Optimization – Reduces image sizes by 25-50%
  • Lazy Loading – Improves initial page load performance

Common Issues

  1. Permission errors – Ensure cache directory permissions are correct.
  2. Cache not working – Verify optimization settings are enabled.
  3. Images not converting – Confirm the GD extension is installed.
  4. Admin bar missing – Check user capability settings.

Security

  • Input sanitization for all settings
  • Nonce verification for forms
  • Capability checks for admin actions
  • Secure file operations

Multisite Support

  • Network-wide settings management
  • Individual site overrides
  • Centralized cache control
  • Site-specific optimization rules

External Services

This plugin connects to the BlinkSpeed API service:

https://rest.blinkspeed.ai

These services provide CSS optimization, image optimization, and license verification.

Data Sent

  • CSS file URLs and content for optimization
  • Image URLs for WebP conversion
  • License key for verification

Service Information

Service Provider: https://blinkspeed.ai
Support Policy: https://blinkspeed.ai/support-policy/
Terms of Service: https://blinkspeed.ai/term-of-service/

All communication happens over secure HTTPS connections.

Minified Assets

Some JavaScript files are distributed in minified form for performance.

Third-party libraries:

  • assets/js/web-vitals.iife.js – https://github.com/GoogleChrome/web-vitals
  • assets/js/diff.min.js – https://github.com/kpdecker/jsdiff

Plugin-specific scripts:

  • assets/js/img-lazyload.js – https://blinkspeed.ai/resources/js/img-lazyload.js
  • assets/js/script-load.min.js – https://blinkspeed.ai/resources/js/script-load.js

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