How does website update affect search engine rankings?

Question

Google

There is a site — one html page. For some keywords, the site is in the top search engines. Now a new version of a full-fledged site on modx revolution is being developed. Question: how to update the current site and not lose positions in search engines?

Answer 1

Of course, there is a risk that the positions will fly off, but the philosophy of search engines in relation to sites is such that they love it when the site is somehow updated, because. this indicates that the site is being monitored and they are trying to improve it and make it more attractive to visitors, so I think that the risk of falling positions is minimal with the transition to CMS, and it is even more likely that the site will strengthen its position in the eyes of search engines.
I recommend leaving the texts the same, titles, repeating the number of keys on the page, etc., then everything should be ok

Answer 2

You need to leave this page in the same place or 301 redirect to it from the old address if the page is migrated.

Answer 3

As a rule, after a redesign, there is a temporary subsidence of positions. If the structure of the site itself is not broken, and the texts remain old, then after a while (usually it is 1-2 updates), everything returns to normal. If the redesign is done correctly, then the positions will remain in place, or move up a little. As a recommendation, I can say the following: In layout, try to avoid using h1-h6 tags for block titles (not in the content, but in the sitebar, for example). If you really want to, then in the style file for the h1-h6 headings, define synonyms with classes, for example, .h1-.h6, and in the layout, replace <h1>with <div class="h1">
Seemingly obvious things, but it's strange that people neglect this.
Another recommendation after the redesign: temporarily increase the link budget for key queries by 10-20%

Answer 4

From my personal experience, website development is always a good thing. PS at the beginning can lower the site in the search results, but then re-indexing the pages (subject to the uniqueness and quality of the materials) will return all positions. Growth is also possible for other HF, LF requests.
As for the current page, it is better to leave it or transfer it to the engine with the same URL. Although, if you remove it completely, but leave the key queries on new pages, it is possible that PS will react to this very favorably. The main thing is that the quality of the site and content be at a good level, carry out internal optimization.

Answer 5

1. make the current page the basis of the site
2. internal linking
3. regularity of replenishments = always good

Answer 6

The most important thing is to keep the URL structure.
If this can be achieved, then the subsidence should not be critical.