Optimize the display of the site in search results

[natanchik]

📝 Describe the feature

Optimize the display of the site in search results, including but not limited to:

• - icon
• - description.

ℹ️ Additional context

Initial site view in Google Search results:

After the icon fixing:

Maybe we should add one of these variants:

You could need these information from links:

https://validator.schema.org/
https://developers.google.com/search/docs/appearance/structured-data/search-gallery
https://search.google.com/test/rich-results/result?id=gDaVucjdK3X1jP89nAL26w
https://jsonld.com/json-ld-generator/

✅ Definition of Done (DoD):

Correct, clear and appropriate display of the site in search results, including but not limited to:

• the icon Fix missing icon display #234
• description.

[oibioib]

In addition to the problems described in the csv files, i founded:

1. Extra pages with ? are allowed by robots.txt. This may result in duplicates appearing in the search engine index. Right now the page https://www.rs.school/?page=something will have the same content as the main page and it is available for indexing.
2. There is no redirect from the mirror with www (https://www.rs.school/) to without www (https://rs.school/). You need to choose one thing so that duplicate pages with the same content but on different mirrors do not get into the index.
3. The site contains links that lead to pages with code 404 or 403. This reduces the weight of the site.
4. Some of the most important things for SEO - h1, meta title, meta description are duplicated or completely absent on the pages.

404-internal-links.csv
meta-description-missing.csv
meta-description-duplicate.csv
page-titles-below-30-characters.csv
page-titles-duplicate.csv
h1-missing.csv
h1-duplicate.csv
403-404-external-inlinks.csv