META Description tag not set! It's necessary to add into META Description tag a brief description of the page and include the most important keywords. Recommended META Description length - from 70 to 160 symbols, this is optimally for Google, Yahoo and Bing.
This is good practice to use at list next 3 og tags: og:title, og:image, og:description, og:type. You didn't use any one.
You should define url of sitemap.xml in Robots.txt. It's very important to make your site more transparent for Search Engines and increase number of pages in Search Engine results.
FavIcon image is not set or empty. Please add it to this page. Usually it should be done for whole website from settings in CMS or website template.
Server does not use any data compression method. Data compression on http-server allows to improve the page upload speed due to their compression. Searching systems love fast content.
H2 tags are not set or empty. It's necessary to add one or more titles, which includes the most important keywords and frame them by H2 tags
Use strong tag to mark the most important keywords at your page.
Images which displayed by img tags on the page not found. Searching systems loves pages with rich content, we recommend to add multiple images to a page.
Good, this page have title tag! Don't forget to double check it for relevant keywords usage! Here is title that you using:
Good, this page have H1 tag! Don't forget to double check it for relevant keywords usage! This is the text that you using here:
Well done, this page using static URL address without GET-settings.
Good! The length are optimal! Do not forget to double check that you use the main keywords in it. This is the text that you using here:
Sitio en Mantenimiento
Size of the page code is about 1 Kb and not exceed recommended amount 500 Kb.
It should indexing normal. No META-robots restrictions was found.
The current ratio of Text/Code is 26.666666666667 . Well done, ratio of text on the page to the amount of html-code is okay.
Well done, there are no inline-styles in the analyzed page code.
Good! Search engines don't like when you using iframes.
Good! We not found any "open" external link! It's save the page weight for the best SEO.
When you using external linking you have 2 things to remember: 1) you lose your page weight and follow it to other pages 2) if you have a lot of external links Search Engine can mark you as doorway or pay-link site. Now this number is 0 % and this is good.
Good! Just be sure that images use relevant descriptions.