Are html validator errors significant for SEO?

Question

HTML

Hello! I am polishing my project according to the classic seo optimization checklists. In general, the site fulfills the requirements of many of these checklists by 90%. And here I came to such an item as html validation. Tell me how significant the presence of errors is and, in order not to be verbose - specifically such errors (see screenshots). I will be very grateful to hear your opinion.

Answer 1

As I recently found out, the quality of the code in terms of SEO is now somewhere very far away. Those. I don’t know search engine algorithms, but if this factor is present and affects the issue, then it certainly is not in the top ten factors in terms of importance.
As an example, the German-language HF query "Etiketten" - in the organic search results of Google , this page ranks first by a wide margin . In second place is another page of the same site.
If you look at the code in the validator, you will see 693 errors and 293 warnings. And nothing, because other factors are much more important.

Answer 2

In general, yes. Mistakes are best eliminated. With warnings, you still somehow "can live", but errors, and even more so fatals, are not good.

Answer 3

Directly, probably not. But errors in the validator (especially the ones in the screenshot) can lead to poor or even wrong UX. But this is already a problem.

Answer 4

Seo is like a ladder to the top 10. If one ladder is broken, then this is bad, but not critical. And if there are a lot of broken ladders, then you can’t climb. Therefore, what can be fixed is best fixed. In this case, it would be better for you to pay attention to the errors. It's not good for a car. And chances in the top naturally fall.