# Technical SEO

## Guide to HTTP Status Codes

HTTP status codes are standard messages that occur between the client and the server when they communicate.

### [What is XML Sitemap: how to generate it and send it to Google](/content/blog/technical-seo/xml-sitemap/index.html)

What type of XML sitemap is right for you and for your site? Find out by reading this sitemap guide!...  
*SEO Tester Online, January 24, 2020*

### [Guide to file Robots.txt: what it is and why it is so important](/content/blog/technical-seo/robots-txt/index.html)

How do you create a Robots.txt file and where to insert it? Find out in this short article!...  
*SEO Tester Online, December 13, 2019*

### [How to create SEO-friendly URLs](/content/blog/technical-seo/seo-friendly-url/index.html)

In SEO it's the details that make the difference. Read the article to understand how to make your URLs...
*SEO Tester Online, December 13, 2019*

### [Guide to HTTP Status Codes](/content/blog/technical-seo/http-status-codes/index.html)

What are the HTTP status codes to check and optimize to improve your site's SEO? Read the guide!...  
*SEO Tester Online, December 12, 2019*