What the checker reads
| Tag | What it controls |
|---|---|
| Title | The clickable headline in search results |
| Meta description | The snippet under the title |
| Canonical | Which URL should rank when there are duplicates |
| Robots | Whether the page may be indexed and followed |
| og:title, og:description, og:image | The preview card on WhatsApp, LinkedIn and Facebook |
| twitter:card | How links look on X |
Why Open Graph tags matter
When someone shares your page, the app builds a preview from your Open Graph tags. Without them it guesses, often picking a logo, a cookie banner or no image at all. A good preview gets more clicks from every share, and more shares.
Quick fixes for common problems
- Missing og:image: add a 1200 by 630 pixel image for each important page.
- Same title on every page: write a unique title for each page, with the main topic first.
- No canonical: add a self-referencing canonical to every indexable page.
- A stray noindex: remove it from pages you want in search, especially after moving from a staging site.