How to read SEO analyzer results: which errors to fix first

An SEO report can contain twenty observations, and not all of them carry the same weight. To see what shows up in practice, we ran the home pages of 27 Chilean websites (universities, banks, news outlets and telecom companies) through our analyzer on November 13, 2026. 8 of 27 had no H1 in their HTML, 4 had no meta description and one in three images had no alternative text. Knowing how to read SEO analyzer results helps you decide what to fix today and what can wait.

No H18

Title over 60 characters7

More than one H16

Title under 30 characters5

No meta description4

Meta description over 1604

No structured data4

No canonical2

Source: InfoByData's own measurement with the SEO Checker, Nov 13, 2026. Home page HTML, without running JavaScript

View the data as a table

No H1	8
Title over 60 characters	7
More than one H1	6
Title under 30 characters	5
No meta description	4
Meta description over 160	4
No structured data	4
No canonical	2

How to read the report's colors

Most analyzers use a traffic-light system. In our SEO analyzer it works like this:

• Green: the element exists and meets the recommendation. Nothing to do.
• Yellow: it exists but can be improved. For example, a 70-character title that Google will probably truncate.
• Red: it is missing or has a problem that may affect indexing or how you appear in Google.

The color shows the status, not the urgency. In SEO analyzer results, a red on "images without alt" is less serious than a yellow on "robots: noindex". That is why it is better to sort the results by impact, not by color.

In what order to fix SEO analyzer results

Priority	What to check	Why
1. Indexing	HTTP status other than 200, noindex, X-Robots-Tag header	If Google cannot index the page, nothing else matters
2. Title	Missing, empty or repeated across many pages	Google uses it for the result's title around 87% of the time
3. Canonical	Missing or pointing to another URL by mistake	Google may show a different version of the page
4. H1	Missing, or several with the same weight	Google also uses headings to generate the title
5. Meta description	Missing or too long	It shapes the text people see before clicking
6. Images and structured data	Missing alt, no schema	Ongoing improvements for images and rich results

The 87% figure comes from the Google Search Central blog. And Google's documentation on titles warns that having several headings with the same visual weight "can be confusing" when generating the result's title.

✓▣Free toolFree SEO Checker: on-page SEO analyzerPaste a URL and check its title, meta description, headings, canonical, languages, images and links.Use tool →

Three results that often confuse people

"No H1", but the page does show one. An analyzer that reads the HTML delivered by the server does not see what is built later with JavaScript. In our measurement, several sites without an H1 load part of their content that way. Google does run JavaScript, but at a later stage, according to its JavaScript SEO guide. Check the page with Search Console's URL Inspection before changing anything, and run it through the SEO analyzer again once you fix it.

"Different final URL". If you type yoursite.com and the report shows another address, there was a redirect. That is normal (from http to https, or to /personal), but it should be a single, permanent redirect.

"Title too short". On a home page, a title like "Universidad de Chile" is fine: it is the name people search for. On a product page or an article, however, a short title wastes space that could describe the content.

To see how to fix each error, read about the most common SEO errors. And if you are just starting out, first read what an SEO analyzer is and what it checks.