Steps

1. Once you have regular visits to your website, you will have to not lose visitors and ensure that search engines put you forward
2. > You will therefore have to optimize your site with this in mind
3. /!\ You need to create a Google Console account to track and perform certain actions
4. The "robots.txt" and "sitemap.xml" files must be complete and functional
5. Important pages must be indexed
6. Images can even be indexed
7. Non-existent pages must be deleted via the Google console
8. Errors from pages not found must be redirected to a dedicated page
9. Page title and description tags must be on all pages
10. Page "name" and "alt" tags must be on all images
11. Canonical page links must be in place
12. Internal links (redirecting to another page of the site) must be in place on all pages
13. External links (directing to another site) must be in place on all pages
14. Several different pages
15. Images on the pages
16. Videos on the pages
17. All images must have a reduced weight
18. All videos must be reduced weight
19. Unique and different text on the pages (FAQ, Story, etc.)
20. Meta tags compatible with Twitter and other networks
21. Content that changes with each visit (Blog extract, Performance, etc.)
22. The site must be mobile and tablet responsive
23. The site must load quickly
24. All HTML, CSS and JS files must be minified and optimized (and obfuscated if necessary)
25. We only load what is used on the page, so no bandwidth used for nothing
26. We only load local files to go faster (except the Chat bot, Google Tag, etc.)
27. Cache is enabled on all CSS and JS files
28. Cache is activated on all image and video files
29. H1, H2 and H3 tags must be from rarest to most common, therefore to prioritize content
30. The site must have a navigation bar at the top and responsive on the index, to contain a maximum of internal links
31. The site must have a summary page for multiple categories (FAQ, Blog, etc.), to contain as many internal links as possible
32. The site must have a markup scheme added