Technical SEO issues, by category
Every page on the site, grouped by the kind of technical SEO issue it shows. The dots are the issues an audit should report for that page.
critical warning info
Head tags & headings
Missing <title> tag
This page has no <title> element at all.
Title too long
The title is 110 characters. Search results cut off around 60.
Title too short
The title is just "Hi", which describes nothing.
Missing meta description
There is no <meta name="description"> on the page.
Meta description too long
The meta description is 215 characters. It gets cut off around 160.
Missing H1
The page starts at <h2>. There is no H1 anywhere.
Multiple H1s
The page marks three separate lines as an H1.
Heading levels skip
The headings jump from <h1> to <h4>, skipping H2 and H3.
Content quality
Thin content
The page has almost no text on it.
Images missing alt text
One image on the page has no alt attribute.
Duplicate content (same page, two URLs)
Identical to /content/duplicate-b: same title, meta, and body.
Duplicate title (product A)
Shares the title "Blue Running Shoes | Sole Mates" with product B.
Duplicate title (product B)
Shares the title "Blue Running Shoes | Sole Mates" with product A.
Duplicate meta description (bakery)
Shares its meta description word for word with the florist page.
Duplicate meta description (florist)
Shares its meta description word for word with the bakery page.
Indexability & canonical
Noindex (robots meta)
Has <meta name="robots" content="noindex"> in the head.
Noindex (X-Robots-Tag header)
No robots meta tag. The noindex comes in an HTTP header instead.
Canonicalized to another URL
Names the homepage as its canonical, so it defers indexing to it.
Conflicting canonical signals
The HTML canonical and the HTTP Link-header canonical disagree.
HTTP status & links
Redirects
Performance
Site structure
Kitchen sink
Duplicate URLs
The same page served again at a second address. This is the raw material for the duplicate-content check. They are linked here so a crawler reaches them and does not mistake them for orphans.
A few pages are left off this list on purpose. An orphan page (/structure/orphan) is only in the sitemap, and some 404, 500, and 403 URLs are only in the sitemap too, so a crawler has to find them on its own.