Checks if your webpages' URLs are SEO friendly. In order for links to be SEO friendly, they should contain keywords relevant to the page's topic, and contain no spaces, underscores or other characters.

Using relevant keywords and text in the alt attribute can help both users and search engines interpret the subject of an image. This feature checks if the images on your webpage are using alt attributes.

Checks if your site is using and correctly implementing a favicon. Favicons are small icons that appear in your browser's URL navigation bar. They are also saved next to your URL when your page is bookmarked.

Checks your page size. This means the size of the entire HTML code on your web page including images, external javascripts and external CSS files.

Checks how your website renders on mobile devices - e.g., tablets and smartphones.

HTTPS should be used by any site that collects sensitive customer data. Google is increasingly using HTTPS as a positive ranking factor.

HTML compression plays an important role in improving the website speed by finding similar strings within a text file and replacing them temporarily to reduce overall file size.

Page speed is an important factor for search engine rankings and the overall site success. Pages that take longer than 5 seconds to load can lose up to 50% of their visitors. Faster webpages result in higher traffic.

This checks if any of the external javascript and CSS files used in your page are minified.

Checks the meta tags within your page and determines if meta title tags, meta description tags, meta robot tags and meta keyword tags are in place. Meta tags do not affect how your page is displayed, but help indicate to search engines the topic of your page.

Checks if your webpage content uses H1 and H2 HTML header tags. Header tags are not visible to users, but help clarify and support the overall theme or purpose of your page to the search engines. The H1 tag represents the most important heading.

Does your website use a robots.txt file? When search engine robots crawl a website, they typically first access a site's robots.txt file. Robots.txt tells Googlebot and other crawlers what is and is not allowed to be crawled on your site.

Checks if your robots.txt file is instructing the search engine crawlers to avoid parts of your website. The disallow directive is used in robots.txt to tell the search engines not to crawl and index a page.

Checks how many redirects your URL will perform to resolve the final destination URL. Redirects often cause search engine indexing issues and can also lead to some minor loading delays.

Checks if your page is connected to one or more of the popular social networks. Social signals are becoming increasingly important as ranking factors for search engines to validate a site's trustworthiness and authority.