Free Meta Tag Checker
Enter a page. We read its real meta tags, show how it may look in Google and when shared on social media, and list every tag with what to fix. No sign-up.
- 01Enter a page
- 02We read its tags
- 03See how it looks in search
Google result preview
Social share preview
All tags
theStacc checks every page it writes against these rules before publishing, and writes and publishes SEO articles for your site every week.
Sign up for free →What are meta tags?
Meta tags are lines in a page's HTML head that describe the page to search engines and social networks. The title and meta description shape your search result; the canonical and robots tags control indexing; Open Graph and Twitter/X tags control how a shared link looks. This checker reads the real tags on your page and previews both.
The tags that matter most
| Tag | What it does |
|---|---|
| title | The clickable headline in search results and the browser tab |
| meta description | The summary Google often shows under the title |
| canonical | The URL you want indexed when several URLs show the same content |
| meta robots | noindex, nofollow and snippet controls |
| og:title, og:description, og:image | How the page looks when shared on Facebook, LinkedIn and others |
| twitter:card | The card style on X; it falls back to Open Graph |
Frequently Asked Questions
The title tag, meta description, canonical, meta robots and X-Robots-Tag header, html lang, viewport, hreflang, Open Graph tags (og:title, og:description, og:image, og:url, og:type, og:site_name) and Twitter/X card tags.
It is an approximation. We cut the title at about 60 characters and the description at about 160, as Google often does, but Google measures by pixel width and sometimes rewrites titles and descriptions to match the search.
Aim for about 30 to 60 characters for the title and 70 to 160 for the description. Put the most important words first so they survive if Google shortens them.
Social networks use the og:image tag. If it is missing, too small, or blocked from their crawlers, the share shows no image or a random one. Use an image of at least 1200 × 630 pixels.
No. We read the page when you click the button, send the results to your browser and keep nothing. The tool is free with no sign-up; each visitor can run a limited number of checks in a short period.
Last updated 2026-09-28.
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