Technical SEO requires skills in subjects including performance engineering, software architecture, system administration for the Linux Operating System (OS), caching, testing, load testing, Content Delivery Networks (CDN), Content Management Systems (CMS) such as WordPress, programming languages such as PHP, web server configuration and administration for the Apache or NGINX web servers, and much more.
In this article we'll take a brief look at the Open Graph Protocol, the og:image meta tag, and we'll review how to identify that this value is missing and how to fix this issue. Finally, we'll take a look at the Facebook for Developers: Sharing Debugger tool, test several pages, and address an image size issue.
Lazy load images & videos in order to reduce the size of a web page request considerably and improve site speed overall.
Nobody likes being kept waiting, and that includes search engines. In this article we cover upsides and downsides of the Google PageSpeed Module and the W3 Total Cache Pro plugin (for WordPress-based websites) along with a brief explanation of some basic performance tests that were conducted using the WebPagetest.org website.