Comprehensive WordPress Site Repair

project requirement
Technical Specifications:
1. General Information
Project: Optimizing the performance of the WordPress website
Objectives:
Reducing website response time
Speeding up image loading
Improving performance and user experience
2. Task 1: Configuring WordPress caching
2.1. Goal
Implement multi-level caching to reduce server response time and speed up page loading.
2.2. Caching requirements
2.2.1. Page caching
Install and configure a caching plugin (WP Rocket, W3 Total Cache, or similar)
Configure caching for static HTML pages
Set cache lifetime: 4 hours for the home page, 8 hours for internal pages
Implement automatic cache clearing when content is updated
2.2.2. Object Caching
Configure object caching via Redis or Memcached
Install and configure the appropriate plugin (Redis Object Cache, etc.)
Configure database query caching
Set TTL for objects:
2.2.3. Browser caching
Configure Cache-Control headers for static resources:
CSS/JS files
Images
Fonts
Implement static file versioning for cache invalidation
2.2.4. Minification and concatenation
Enable minification of HTML, CSS, and JavaScript
Configure concatenation of CSS and JS files
Implement deferred loading of JavaScript (defer/async)
2.3. Server integration
Configure Nginx/Apache to support caching
Implement gzip compression for text resources
Configure ETag headers
2.4. Acceptance criteria
Server response time (TTFB) less than 200 ms
Google PageSpeed Insights performance score of at least 90/100
Cache is cleared correctly when content is updated
Caching works for authorized users (with exceptions)
3. Task 2: Implement image loading in CDN
3.1. Goal
Integrate CDN for hosting and delivering images, reducing the load on the main server and speeding up
the loading of media files.
3.2. Requirements for CDN integration
3.2.1. Selecting and configuring a CDN provider
Select a CDN provider (Cloudflare, BunnyCDN, CloudFront, or similar)
Configure the CDN zone for the website domain
Configure an SSL certificate for the CDN
3.2.2. Integration with WordPress
Install and configure a plugin for working with CDN (WP Offload Media, CDN Enabler, or similar)
Configure automatic uploading of new images to CDN
Implement synchronization of existing media files
Ensure support for the WebP format (with fallback)
3.2.3. Image optimization
Configure automatic image optimization upon upload:
Lossless compression
Resize to a maximum width of 1920px
Automatic preview generation
Implement lazy loading for images
Configure adaptive images for different devices
3.2.4. Content delivery configuration
Configure image caching policy in CDN:
TTL for images: 1 month
Cache-Control headers
HTTP/2 support
Implement hotlinking protection
Configure watermarking if necessary
3.3. Migration of existing images
Create a script to migrate existing media files to CDN
Ensure redirection of old URLs to CDN addresses
Preserve the structure of the WordPress media library
3.4. Acceptance criteria
All new images are automatically uploaded to CDN
Existing images are transferred to CDN
Image URLs in content are replaced with CDN addresses
Image loading speed is improved by 50%
HTTPS is supported for all resources
4. Technical requirements
4.1. Compatibility
WordPress version 5.8+
PHP 7.4+
Multisite support
Compatibility with existing plugins and themes
4.2. Security
Image privacy preservation
Protection against direct access to originals
Secure data transfer to CDN
4.3. Monitoring and analytics
Integration with Google Analytics
Performance monitoring configuration
Caching and CDN error logging
5. Implementation stages
Stage 1: Preparation
Analysis of the current configuration
Website backup
Selection and configuration of tools
Stage 2: Caching configuration
Installation and configuration of caching plugins
Configuring server caching
Testing cache performance
Stage 3: CDN integration
Configuring a CDN account
Integration with WordPress
Migrating existing images
Stage 4: Testing and optimization
Performance testing
Configuring additional optimizations
Documenting changes
6. Documentation
Upon completion of the work, the following must be provided:
Technical documentation on settings
Instructions for the site administrator
Recommendations for further support