Meta Tag Analyzer fetches a live webpage and extracts all SEO-relevant meta tags: title, description, canonical URL, Open Graph (og:title, og:image, og:description), Twitter Card tags, robots directives, and structured data. Validates tag presence and character lengths against best practices. Useful for SEO audits, social sharing previews, and confirming that CMS-generated tags are correct.
How it Works
1Enter a URL and click Analyze.
2The tool fetches the page HTML via a CORS proxy.
3Meta tags are extracted and grouped by category: basic SEO, Open Graph, Twitter Card, technical.
4Issues and warnings (missing tags, overly long descriptions, missing og:image) are highlighted.
Frequently Asked Questions
What is the ideal length for a meta description?
Google displays 150–160 characters of meta description in search results (desktop). Mobile truncates at around 120 characters. Aim for 140–155 characters — enough to be descriptive without being cut off. Avoid keyword stuffing; write for the human reader who will decide whether to click.
Why does my Open Graph image not appear when sharing on social media?
Common causes: the og:image URL is relative rather than absolute (must be a full https:// URL), the image is less than 200×200px (minimum for most platforms), the image returns a non-200 HTTP status, or the hosting server blocks social media crawlers (Facebook, Twitter) with CORS or user-agent headers. Use the OG Image Preview on each platform's developer tools to debug.
What does the robots meta tag control?
The robots meta tag (or X-Robots-Tag HTTP header) tells search engine crawlers what to do with a page: index (include in index), noindex (exclude), follow (follow links), nofollow (don't follow links), nosnippet (no description in results), noarchive (no cached copy). The default when the tag is absent is 'index, follow'.
Does having a canonical tag improve SEO?
A canonical tag signals the preferred URL for duplicate or near-duplicate content. It prevents split ranking signals between URL variants (with/without www, with/without trailing slash, with query parameters). It's not a direct ranking factor but prevents indexing of unwanted duplicates and consolidates link equity to the canonical URL.