About the Meta Tag Checker
Enter a URL (or paste HTML) to audit the SEO basics of any page: title and description length, indexability, canonical, robots.txt, headings, image alt text, Open Graph, Twitter cards and JSON-LD, with a Google result preview and a social share preview.
Key features
- Audits title, meta description, canonical and robots directives
- Google search result and social share previews
- Checks robots.txt, HTTP status, redirects and HTTPS
- Open Graph, Twitter/X card and JSON-LD structured data
- Heading outline, image alt text and word count
- Works with a live URL or pasted HTML
Audit any page's on-page SEO in seconds
Before a page can rank, search engines need to crawl it, index it and understand what it's about, and people need a reason to click it. The meta tag checker fetches a page the way a search engine does and checks the essentials: title, description, indexability, canonical, headings, social tags and structured data. It shows a preview of how the page appears in Google and when shared.
What gets checked
| Area | Checks |
|---|---|
| Basics | Title tag length, meta description length |
| Indexing | Meta robots and X-Robots-Tag, canonical URL, robots.txt, hreflang |
| Content | Single H1, amount of visible text, image alt attributes |
| Social | og:title, og:description, og:image, twitter:card |
| Technical | Viewport, language, charset, favicon, JSON-LD validity, HTTP status, redirects, HTTPS, response time |
Each item is marked pass, warning, fail or info. The score is a quick summary of the basics, not a ranking prediction.
Recommended lengths
| Element | Recommended | Why |
|---|---|---|
| Title | 30–60 characters | Truncated around 600 px |
| Meta description | 70–160 characters | Truncated around 920 px |
| H1 | One per page | Clear main topic |
| og:image | 1200 × 630 px | Large preview on most networks |
Common problems and fixes
- Page marked noindex by accident. Staging settings often leak to production. Remove
noindexfrom the meta robots tag or theX-Robots-Tagheader. - Missing or duplicate titles. Every page needs a unique title that describes its content.
- Canonical pointing elsewhere. If the canonical URL isn't the page itself, Google will usually index the other URL instead.
- No og:image. Links shared on social media and chat apps appear without a picture and get fewer clicks.
- Invalid JSON-LD. A single syntax error disables the whole block. Validate after every edit.
Privacy and limits
Pages are fetched on demand by our server, analyzed in your browser and not stored. Only public http(s) addresses on standard ports can be checked, and only the first 2 MB of HTML is analyzed.
Related tools
Create tags with the Meta Tag Generator, check crawl rules with the Robots.txt Tester, or build a sitemap. For keyword density, use the Word Frequency Counter.
How to use the Meta Tag Checker
- Enter the address of the page or website you want to check.
- Click the button. Our server fetches the public page (it can't reach private or local addresses).
- Review the results, starting with anything marked in red or amber.
- Fix the issues on your site, then run the check again to confirm.