Learn · Practice
Can you spot it?
Our checker reads a website and reports what it found. These are 30 short exercises in doing the same thing yourself. Each one shows a real-looking page with one thing wrong — or four attempts at something with one done right — and every line you pick explains itself, including the correct ones.
30 exercises About 30 seconds each No account
By how much it costs you
- Critical 4
- High 6
- Medium 14
- Low 6
Severity here is the same severity your report uses, so practising in this order is practising in the order that matters.
SEO
8 exercises- Critical. Spot the tag hiding a page from Google
- High. Pick the page title that earns the click
- Medium. Choose the right canonical tag
- Medium. Decide which Lighthouse failure comes first
- Medium. Find the error breaking your structured data
- Medium. Pick the description that earns the click
- Medium. Pick the right main heading
- Low. Find why the share image is missing
Technical
5 exercisesSecurity
4 exercisesLocal
6 exercisesPerformance
2 exercisesAccessibility
4 exercisesContent
1 exerciseWhy these and not thirty others
Every exercise here is a finding our own checker looks for, so the set is not a syllabus somebody invented — it is the list of things that actually go wrong on small business websites, in the order they cost you the most. Each one links to the full written fix.