13 WordPress Speed Optimisation Ideas: Caching, Images and Page Load (2015)

(Old video recovered from my old channel, originally posted in 2015.) Work through 13 areas of WordPress performance, from server and browser caching to image sizes and database cleanup. This 2015 presentation explains how repeated page generation, large files and extra browser requests can slow a site down, then introduces the tools and settings discussed for each problem. The lesson covers gzip compression, CDNs, CSS and JavaScript minification, unused plugins, advertising weight, lossy and lossless image compression, responsive image sizes and lazy loading. It also looks at the number of posts displayed on the home page and old data left behind in the database. Plugin examples include W3 Total Cache, WP Super Cache and EWWW Image Optimizer. The presentation records the WordPress optimisation advice and plugin landscape of 2015; the chapters make it easy to jump directly to the performance area you want to understand. Chapters 0:00 WordPress speed and page weight 0:48 Server caching 1:17 Browser caching 1:39 Gzip compression 2:12 Permalink advice in the original presentation 2:48 Content delivery networks 3:50 Minify CSS and JavaScript 5:24 Remove unused plugins 6:03 Reduce advertising load 7:25 Compress images 8:57 Resize images for the display 10:28 Lazy-load images and video 11:43 Reduce posts on the home page 12:33 Clean up the database