Technical SEO is a good free website checker service.

Technical SEO refers to website and server optimization, which helps search engine spiders crawl and index your site more efficiently (to help improve organic rankings).

SEO Checklist

Search engines prioritize websites in search results that exhibit certain technical characteristics – such as a secure connection, responsive design, or fast loading times – and technical SEO is the work you need to do to make sure your website meets these requirements. . Below you will find a list of important steps you can take to ensure optimal technical search engine optimization. By following these guidelines, you can ensure that your site’s security and structure matches the expectations of search engine algorithms and is rewarded accordingly in search results.

1. Use SSL.
Secure Sockets Layer – SSL is a security technology that creates an encrypted connection between a web server and a browser. You can discover a site quite easily with SSL: a website’s URL starts with https:// rather than http://.

In 2014, Google announced that they wanted to see “HTTPS everywhere” and that secure HTTPS sites would be prioritized in search results over insecure ones. =

So it makes sense where possible to secure your site – this can be done by installing an SSL certificate on your site, although most top website builders now enable SSL by default.

2. Make sure your site is optimized for mobile devices.
A “responsive” website design automatically adjusts to make it easy to navigate and read on any device.

Google is clearly aware of the fact that having a responsive site is considered a very important ranking signal according to its algorithms. And with Google’s “mobile first” approach to content indexing, a responsive website is more important than ever.

Therefore, it makes sense to make sure that your website is fully responsive and will display in the best possible format for mobile, tablet or desktop users.

3. Speed ​​up your site.
Search engines prefer sites that load quickly: page speed is considered an important ranking signal.

There are several ways to speed up your website:

Use fast hosting.
Use a Fast DNS Service Provider (“Domain Name System”)
Minimize “HTTP Requests” – Minimize the use of scripts and plugins.
Use a single CSS style sheet (the code that is used to tell the website browser how to display your website) instead of multiple CSS style sheets or inline CSS.
Make sure your image files are as small as possible (no excessive pixelation)
Compress your web pages (this can be done with the GZIP tool)
Minify your site code – Get rid of unnecessary whitespace, line breaks or indentation in HTML, CSS and Javascript (see the Google Minify Resources page for help).

4. Eliminate duplicate content issues.
Duplicate content can confuse users (and search engine algorithms as well); it can also be used to try and improve your SERP rankings or drive more traffic.

As a result, search engines don’t like it, and Google and Bing are advising webmasters to fix any duplicate content issues they find.

You can fix duplicate content issues by:

Prevent your CMS from publishing multiple versions of a page or post (for example, by disabling session IDs unless they are vital to your website’s functionality, and getting rid of print versions of your content).
Using the canonical link element to let search engines know where the “master” version of your content is located.

5. Create an XML sitemap.
An XML sitemap is a file that helps search engines understand your website as they crawl it – you can think of it as a kind of “road map” telling search engines exactly where each page is located.

It also contains useful information about every page on your site, including

when the page was last modified;
what priority it has on your site;
how often it is updated.
In BigCommerce, your XML site is created automatically; if you are using a different platform, you may need a sitemap generator to generate it.

6. Consider enabling AMP.
AMP is a Google-backed project that aims to speed up the delivery of content to mobile devices through the use of custom code known as AMP HTML.

AMP versions of your web pages load very quickly on mobile devices. They do this by stripping your content and code to a bare minimum, leaving text, images, and videos intact, but disabling scripts, comments, and forms.

Because they load so quickly, AMP versions of pages are much more likely to be read and shared by your users, increasing wait times and the number of backlinks pointing to your content – all good things from an SEO standpoint. On top of that, Google sometimes highlights AMP pages in prominent carousels in search results, giving you an important search boost.

7. Add structured data markup to your site.
Structured data markup is code that you add to your website to help search engines better understand its content. This data can help search engines index your site more efficiently and provide more relevant results.

Structured data

In addition, structured data enhances search results by adding “rich snippets” – for example, you can use structured data to add ratings to reviews; product prices; or information about the reviewer (example below).

Because they are more visually appealing and immediately highlight useful information to search engines, these rich results can improve your click-through rate (CTR) and drive additional traffic to your site. Because sites with higher CTR results are generally considered to be preferred by search engines, it’s worth putting in the effort to add structured data to your site.

8. Register your site with Google Search Console and Bing Webmaster Tools.
Google Search Console and Bing Webmaster Tools are free tools from Google and Microsoft respectively that allow you to submit your website to their search engines for indexing.

When you’re ready to launch your website, you should submit its XML sitemap (see above) to both Google Search Console and Webmaster Tools so they can crawl your new site and start displaying it results in search results.

These services also allow you to monitor your site’s overall performance from a search engine perspective – other things you can do with these tools include:

checking the usability of your site on mobile devices
access to search analytics
viewing backlinks to your site
reject spam links
and much more.