Blocks you outright
Status, noindex, canonical
A page that answers with an error, carries a noindex, or hands its credit to another address cannot rank no matter what else is on it. These three explain most missing pages.
Most pages that never rank are not losing a competition. They are quietly telling search engines to leave them alone, and nobody has looked. This takes about four seconds to check.
We fetch the page the way a search engine would and report what it found: whether indexing is allowed, what the title and description look like, the heading outline, how many internal links leave the page, and whether there is any structured data.
Ordered so that anything which blocks you outright appears before anything cosmetic.
A page that answers with an error, carries a noindex, or hands its credit to another address cannot rank no matter what else is on it. These three explain most missing pages.
Length, presence and structure. The title is the clickable line, the description sells the click, and the heading outline is what earns sitelinks under your result.
How many internal links leave the page, whether it describes itself in a format search engines read directly, and whether there is enough on it to be worth storing.
This is a teaching tool, not an audit of your whole site, and it is our reading of standard practice rather than advice for your situation. Check anything important with your own specialist.