ToolReign
SEO

Meta Tags Checker

Paste HTML head to audit meta tags with SEO score, Google SERP preview, and Twitter card preview.

SERP PreviewTwitter CardSEO ScoreFree
10/10
SEO Score

✓ No issues found

Google SERP preview
Free JSON Formatter Online
toolreign.comm › page
Free JSON formatter and validator. Beautify, minify, and validate JSON instantly.
Twitter / X card preview
Free JSON Formatter Online
Beautify and validate JSON instantly.
toolreign.comm
Extracted Tags (13)
titletitleFree JSON Formatter Online
metadescriptionFree JSON formatter and validator. Beautify, minify, and validate JSON instantly.
metarobotsindex, follow
ogog:titleFree JSON Formatter Online
ogog:descriptionBeautify and validate JSON instantly.
ogog:urlhttps://toolreign.comm/developer/json-formatter
ogog:typewebsite
ogog:imagehttps://toolreign.comm/og-default.png
twittertwitter:cardsummary_large_image
twittertwitter:titleFree JSON Formatter Online
twittertwitter:descriptionBeautify and validate JSON instantly.
metaviewportwidth=device-width, initial-scale=1
linkcanonicalhttps://toolreign.comm/developer/json-formatter

How to Use

Step-by-step guide to get the most from this tool

  1. 1

    Copy head HTML

    View source and copy the <head> section from your page.

  2. 2

    Paste and audit

    Paste into the editor to extract all meta tags.

  3. 3

    Review previews

    Check Google SERP and Twitter card mockups.

  4. 4

    Fix issues

    Address warnings from the SEO score checklist.

Features

What makes this tool stand out

🔍

SERP preview

Mock Google search snippet.

🐦

Twitter preview

Social card layout mockup.

📊

SEO score

10-point checklist with issues.

🏷️

Tag extraction

OG, Twitter, meta, and canonical.

⚠️

Warnings

Title/description length alerts.

🔒

Private

Browser-only parsing.

Related Tools

More free utilities you might find useful

🏷️
Meta Title Generator
Create titles
📝
Meta Description Generator
Write descriptions
📱
Open Graph Generator
OG tags
📋
Schema Generator
JSON-LD schema

Frequently Asked Questions

Quick answers to common questions

What meta tags should every page have?+

Minimum: title, description, viewport, canonical, og:title, og:description, og:image, and robots if needed.

How is the SEO score calculated?+

Starts at 10 and deducts points for missing or problematic tags like long titles or missing canonical.

What is the SERP preview?+

A mock Google search result showing how your title and description may appear in search.

What is the Twitter card preview?+

Shows how your page may look when shared on X/Twitter with title, description, and image.

Can I check a live URL?+

View source on any page, copy the <head> section, and paste it here.

What length should titles be?+

Under 60 characters to avoid truncation in Google results.

What length for meta descriptions?+

Under 160 characters is recommended for full display in SERPs.

Is my HTML private?+

Yes. Parsed entirely in your browser.