Why is pasted HTML the recommended mode?

It is reliable and stays in your browser. Direct URL analysis may fail when the target site does not allow cross-origin browser requests.

Does a review item mean the metadata is wrong?

Not necessarily. Review items flag conditions that need context, such as a relative or cross-domain canonical, an intentional noindex directive, or unusually short or long text.

Are the previews exact?

No. Search engines and social platforms can rewrite, crop, cache, or supplement metadata. The tool does not fetch or render remote images.

Can X/Twitter tags fall back to Open Graph?

Common title, description, and image fields may fall back to Open Graph values. The analyzer notes available fallbacks without promising a platform's final rendering.

What is the difference from Meta Tag Generator?

The Analyzer inspects metadata you already have. Meta Tag Generator helps create new metadata and copy-ready HTML.

Does BlinkCalc store pasted HTML?

No storage is added by this tool. Pasted HTML is processed locally; URL mode sends a direct browser request to the URL you choose.

Meta Tag Analyzer

Inspect existing title, description, canonical, robots, Open Graph, and X/Twitter metadata. Find missing, empty, or duplicate values.

Existing metadata inspectionHead-scoped checksDuplicate detectionLocal pasted-HTML analysis

Inspect metadata

Paste HTML for reliable local analysis, or try a public URL as a best-effort browser request.

HTML or head markup

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <title>Free Online Calculators & Tools | BlinkCalc</title>
  <meta name="description" content="BlinkCalc offers fast, free online calculators and practical tools for finance, health, math, SEO, writing, images, and everyday tasks." />
  <link rel="canonical" href="https://blinkcalc.com/" />
  <meta name="robots" content="index,follow" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta property="og:title" content="BlinkCalc - Free Online Calculators and Tools" />
  <meta property="og:description" content="Fast, useful calculators and tools for everyday work." />
  <meta property="og:image" content="https://blinkcalc.com/og-image.jpg" />
  <meta property="og:url" content="https://blinkcalc.com/" />
  <meta property="og:type" content="website" />
  <meta name="twitter:card" content="summary_large_image" />
  <meta name="twitter:title" content="BlinkCalc - Free Online Calculators and Tools" />
  <meta name="twitter:description" content="Fast, useful calculators and tools for everyday work." />
</head>
<body></body>
</html>

Pasted HTML is analyzed locally when you select Analyze Meta Tags—not on every keystroke.

Pasted HTML was parsed locally in your browser.

Analysis summary

Counts show passes, review items, and informational notes.

Passed

Review

Notes

Source

Sample pasted HTML

Title

Free Online Calculators & Tools | BlinkCalc

Title length

43 characters

Description

BlinkCalc offers fast, free online calculators and practical tools for finance, health, math, SEO, writing, images, and everyday tasks.

Description length

135 characters

Canonical

https://blinkcalc.com/

Robots

index,follow

Language / charset

en / utf-8

Approximate search preview

Search engines may rewrite or truncate this presentation.

Free Online Calculators & Tools | BlinkCalc

https://blinkcalc.com/

BlinkCalc offers fast, free online calculators and practical tools for finance, health, math, SEO, writing, images, and everyday tasks.

Approximate social metadata preview

The image URL is shown as text; no remote image is fetched or rendered.

https://blinkcalc.com/og-image.jpg

BlinkCalc - Free Online Calculators and Tools

Fast, useful calculators and tools for everyday work.

https://blinkcalc.com/

Findings

Title tag

Title found (43 characters). Search engines may rewrite or truncate displayed titles.

Title length guidance

43 characters. Length is shown as descriptive guidance, not a universal pass/fail rule.

Meta description

Description found (135 characters). Search snippets can vary or use page content instead.

Description length guidance

135 characters. Length is descriptive; search engines can generate a different snippet.

Canonical URL

Canonical found: https://blinkcalc.com/

Robots directives

index: This page allows supporting search engines to consider it for indexing. follow: This page allows supporting crawlers to follow links from it.

Viewport tag

A viewport tag was found.

Open Graph metadata

Core Open Graph properties are present. Optional og:description is present. No image network or dimension check was performed.

X/Twitter metadata

Recognized card type: summary_large_image. Title, description, or image values available directly or through Open Graph fallback: 3/3. Fallback availability is guidance only; this preview does not contact X/Twitter.

Duplicate metadata

No duplicate title, description, canonical, robots, Open Graph, or X/Twitter keys were detected in the supplied head metadata.

Metadata location

No relevant metadata was detected outside <head>.

Using the metadata findings

What the analyzer checks

The analyzer reads supplied head metadata, preserves duplicate values, and reports missing, empty, malformed, or unusually sized fields. It covers title, description, canonical, robots, viewport, Open Graph, and X/Twitter metadata without acting as a crawler or full site audit.

Pasted HTML and URL analysis

Pasted HTML is processed locally and is the reliable option. URL mode is a secondary best-effort browser fetch: HTTP errors and clearly non-HTML responses are rejected, but CORS rules can prevent otherwise valid public pages from being read.

How to interpret findings

A review item is a prompt for context, not a universal SEO failure. Title and description counts are advisory; search engines can rewrite or truncate results. Robots directives are explained neutrally because noindex or nofollow may be intentional.

Social metadata limitations

Open Graph and X/Twitter fields are extracted from the supplied markup. Preview cards are approximate: the analyzer does not request remote images, verify dimensions or MIME types, or reproduce a platform's cache and rendering rules.

Analyzer or Generator?

Use this analyzer when metadata already exists and you want to inspect it. Use Meta Tag Generator when you need to draft new title, description, Open Graph, or X/Twitter markup.

Frequently Asked Questions

It extracts title, description, canonical, robots, viewport, Open Graph, and X/Twitter metadata from supplied head markup, then reports missing, empty, duplicate, malformed, or review-worthy values.