Meta Tag Analyzer — Help & Documentation
Learn how to inspect a page's title tag, meta description, Open Graph tags, Twitter Card tags, headings, hreflang, and more — with a live Google SERP preview.
Features
Live Google SERP preview showing how the title and description will appear in search results
Title tag analysis with character count and a Good / Too short / Too long / Missing verdict
Meta description analysis with character count and the same verdict scale
Canonical URL detection — flags when no canonical is set
Robots meta tag value (noindex, nofollow, etc.) or default behavior note when absent
Viewport meta tag check with a warning if missing (affects mobile rendering scores)
Charset declaration reporting
HTML page size with colour-coded verdict (green under 500 KB, amber up to 2 MB, red above)
H1 and H2 heading extraction — warns on missing or multiple H1s
Open Graph tag table (og:title, og:description, og:image, og:type, etc.)
Twitter Card tag table (twitter:card, twitter:title, twitter:description, etc.)
Hreflang tag listing for international SEO auditing
How to Use
Enter a page URL
Paste the full URL of any publicly accessible page, including the protocol (https://). The tool fetches the live HTML, so make sure the page is not behind a login or IP block.
Click Analyze
Press the Analyze button or hit Enter. The SECrawl backend fetches the page, parses the HTML head, and extracts all relevant meta tags.
Check the SERP preview
The Google SERP Preview box renders your title in blue, the URL in green, and the meta description in grey — the same layout Google uses. This instantly shows if the title is truncated or the description is too short.
Review Core SEO Tags
The Core SEO Tags table shows verdicts for title, meta description, canonical, robots, viewport, charset, and page size. Address any Missing or Too long / Too short items first.
Check social and international tags
Scroll down to review Open Graph and Twitter Card tags (important for social sharing previews) and hreflang tags (important for multi-language sites).
Understanding Results
| Tag | Ideal Range | Notes |
|---|---|---|
Title | 30–60 characters | Google typically displays up to ~60 chars. Shorter titles miss descriptive opportunity; longer ones are truncated in SERPs. |
Meta Description | 70–160 characters | Not a ranking signal but directly affects click-through rate. Absent descriptions cause Google to auto-generate a snippet. |
Canonical URL | Must be set | Without a canonical, duplicate content issues can split link equity across multiple URLs. |
Robots | index, follow (default) | If absent, Google defaults to index, follow. Set noindex to exclude a page from search results. |
Viewport | Must be set | Required for correct mobile rendering. Missing viewport can lower Core Web Vitals scores. |
HTML Page Size | Under 500 KB | Large HTML documents increase Time to First Byte and may cause Googlebot to truncate parsing. |
Best Practices
Write unique title tags for every page. Duplicate titles make it harder for Google to understand which page to rank for a given query.
Keep your title under 60 characters and front-load the primary keyword. Avoid keyword stuffing — write for the user first.
Always set a meta description even though it is not a direct ranking factor. A compelling description increases click-through rate, which has an indirect positive effect.
Set a self-referencing canonical URL on every page to prevent duplicate content from URL parameters, tracking codes, or www/non-www variations.
Add og:image with a 1200×630 px image to control how your pages appear when shared on social media — pages without og:image often render poorly in social feeds.
Use SECrawl's full site crawl to audit title and description issues across your entire domain at once, including missing, duplicate, and out-of-range tags.