Free Meta Tag Checker
Updated September 2026
Check pasted HTML for SEO meta tag completeness. Analyse title, description, canonical, viewport, and Open Graph tags — free online meta tag checker.
Paste your page's HTML source below — use Ctrl+U in your browser to view page source, select all, and paste here.
Diagnosing web and network issues quickly is critical for site owners, developers, and SEO professionals. The Meta Tag Checker delivers actionable data in seconds.
Check pasted HTML for SEO meta tag completeness. Analyse title, description, canonical, viewport, and Open Graph tags — free online meta tag checker. Results are immediate — no waiting, no loading screens, no account required.
Who uses the Meta Tag Checker?
- SEO specialists auditing a client page for missing or malformed meta tags by pasting its source.
- Webmasters quickly verifying a specific page is correctly set up with title, description, and OG tags.
- Developers confirming meta tags render correctly in production after deployment.
Common uses and search terms
The Meta Tag Checker is frequently used for: meta tags, seo checker, meta description. Whether you need a quick result or are working through a longer project, the tool handles all common variations without any configuration.
Why use Allio Tools's Meta Tag Checker?
Everything runs locally in your browser. No data is sent to a server, logged, or stored anywhere. The tool is completely free with no usage limits, no premium tiers, and no account required. Available in 11 languages and optimised for all screen sizes, the Meta Tag Checker works on desktop, tablet, and mobile with no app download needed.
See also:IP Address Lookup · Website Speed Test · DNS Lookup
How the Meta Tag Checker works
View your page's HTML source (Ctrl+U in most browsers), select all, and paste it into the text area.
Click Analyze Meta Tags to extract every meta tag from the pasted HTML.
Review the SEO Checklist: title tag, meta description, viewport, Open Graph title/description/image, and canonical link — each shown present or missing, with a length warning where relevant.
Scroll to the full meta tags table below for every tag found, color-coded by type (Open Graph, Twitter, or generic).
Tips & tricks
- There's no live URL fetch — you must paste the page's actual HTML source, not its URL.
- The SEO Checklist doesn't include a robots (index/noindex) check — scan the full tags table below it for a name="robots" entry manually if you need to confirm indexability.
- Title and description checks include a length warning (⚠) when the value is outside the recommended range (title: 30–60 chars, description: 50–160 chars) — a present-but-too-short or too-long tag still counts as 'present'.
- There's no bulk/multi-URL audit mode — one paste covers one page; for site-wide audits, use a crawler tool like Screaming Frog instead.
Frequently Asked Questions
Can I enter a URL instead of pasting HTML?
No — this tool only parses HTML you paste in directly. View your page's source (Ctrl+U), select all, copy, and paste it into the text area — there's no live URL-fetch option.
Does this tool check my meta robots directive?
No — the checklist covers title, description, viewport, Open Graph title/description/image, and canonical link, but does not include a dedicated robots (index/noindex) check. Look for a robots meta tag manually in the full tags table below the checklist.
What meta tags are most important for SEO?
Priority: 1. <title> (60 chars), 2. meta description (155-158 chars), 3. rel="canonical" (prevent duplicates), 4. meta robots (index/noindex control), 5. og:image and og:title for social sharing.
What happens if my page has no meta description?
Search engines generate their own description from page content — often pulling an awkward snippet that doesn't represent your page well. A custom description gives you control over your SERP listing and can improve click-through rates.
What is a canonical tag and when should I use it?
<link rel="canonical"> tells search engines which URL is the "official" version when the same content is accessible at multiple URLs (e.g. with/without www, with tracking parameters, HTTP vs HTTPS). Use canonical on all pages as a best practice.
Is my data safe when using the Meta Tag Checker?
Completely safe. The Meta Tag Checker processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
How current is the data returned by the Meta Tag Checker?
The Meta Tag Checker fetches live data in real time each time you run it. Results reflect the current state of the server or domain at the moment of the request.
Why does the Meta Tag Checker sometimes return different results than other tools?
Results depend on the real-time state of the target server and DNS propagation, which can vary by geographic region and caching TTL. If you see inconsistencies, wait a few minutes and re-test — DNS changes can take up to 48 hours to propagate fully worldwide.
Works with ChatGPT, Claude, Cursor, GitHub Copilot, VS Code, Poe and more — 106+ tools, zero data collection.