H1 & H2 are called as header tags. H1 indicates the text with highest priority & H2 being second highest priority. Alt tags are used to give naming to images. This tag is used because search engine crawlers are unable ti identify images & hence proper name is given to them in the form of text.
Exactly how search engines like Google calculate things is a closely held secret but we can know that certain things like a good structure and descriptive headings can be helpful. This post gives some good information on the use of the different H tags and their relation to SEO. Alt tags on images are important not just for SEO but also for visually impaired users using screen readers as the alt tags can add context to a page that would otherwise be lost when using a screen reader or other accessibility options.
yes, H1 is with the highest priority but be careful to use only 1 H1 tags per page not more. also its not necessary to have all the tags in your page. mostly h1, h2 & h3 does the all.
more importantly, you should spend most of the time of SEO with related link building. more related industry sites point your site with related info google will higher your rank.
Hello, that's right ... the H1 titles are the main ones in each of the pages of our website that we want to position in Google, but they are not the same as the meta tag "Title", the H1 is the main header and the best Is to add the main keyword in it, H2 is also header, where we can also include our keyword but it would be better synonyms or a long tail that includes our main keyword, these are header that usually ban before each section of our page. ALT are labels called "Alternative Text" that will indicate what our image is about, as for Google they are also important, it is best to add our keyword or synonyms of it on that tag. This post will explain each of the key SEO optimization SEO On Page.