| serp | Stands for search engine results page ? the page you see after conducting a search. |
| file compression | The process of encoding information using fewer bits; reducing the size of the file. There are many different compression techniques. |
| user agent | Web crawling software. |
| local pack | A pack of typically three local business listings that appear for local-intent searches such as oil change near me. |
| john mueller | Juhn Mueller is the current head of Googles Webspam team. He hosts regular hangouts on the Google Webmasters channel. Webmasters from all around the world can ask questions about SEO and website performance there, and John will answer. |
