Every issue in an audit has a type:
- Error: a problem that stops pages from working or ranking, such as broken pages, server errors, duplicate content, missing titles, invalid structured data or insecure forms. Fix these first.
- Warning: something that weakens a page, such as a missing or badly sized meta description, thin content, a missing H1, images without alt text, slow responses or redirect chains.
- Notice: worth knowing, but not always a problem, such as pages without Open Graph tags, a missing language attribute, deep pages or orphan pages.
The issues list is sorted with errors first and then by how many pages are affected. The How to fix column gives the short fix for each.