Technical SEO
The basics that decidewhat can be indexed.
Nevin checks each crawled page for the technical signals that affect indexing and how a result is presented: directives, canonicals, metadata, images and structured data.
Indexability
A page that cannot be indexed will not be found, however good it is.
- noindex in meta robots tags and X-Robots-Tag headers
- Canonical tags that are missing, conflict with the URL, or point elsewhere
- Pages that robots.txt keeps crawlers away from
- Error responses and redirect chains on pages you link to
On-page essentials
Titles, meta descriptions and H1 headings are checked on every HTML page, along with image alt text, so problems are found as a list rather than page by page.
- Missing or empty titles, meta descriptions and H1 headings
- Images without alt text
Structured data
JSON-LD blocks are parsed on each page so broken markup shows up instead of silently failing.
- JSON-LD that does not parse as valid JSON