Free Meta Tag & OGP Checker

Instantly diagnose title, description, OGP, and canonical tags.
Improve how your site appears in search results and social shares.

Just enter a URL — 3 free checks without registration

What are Meta Tags?

HTML <head> tags that describe a page to search engines and social networks, directly shaping how it appears in search results and shares.

Main tags: title, meta description, canonical, OGP, Twitter Card
Title length: 50-60 chars (EN) / 30-35 chars (JA)
Description length: 120-160 chars (EN) / 80-120 chars (JA)
Required OGP: og:title, og:description, og:image, og:url

Best for: Site owners who want better SERP click-through rates and social previews

What Are Meta Tags? Their SEO Impact

Meta tags are HTML elements in the <head> that communicate page information to search engines and browsers.

Title Tag

The page title shown in search results. The most critical tag affecting CTR (click-through rate). 30-60 characters recommended.

Meta Description

The snippet text shown in search results. Summarize your page content accurately in 120-160 characters.

OGP Tags

Control images, titles, and descriptions when shared on social media. og:title, og:description, and og:image are essential.

Canonical Tag

URL normalization tag to prevent duplicate content. Prevents SEO value dilution from www vs non-www or parameter variations.

Why Meta Tag Checking Matters

Meta tags are the first clues search engines use to understand your page. Without a proper title tag, your CTR drops; without a meta description, Google auto-generates inappropriate snippets.

Missing OGP tags mean thumbnails and titles won't display correctly on social shares, losing traffic opportunities. Canonical tag issues cause duplicate content problems, diluting your SEO authority.

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FAQ

What is a meta tag check?▾

It's a tool that automatically diagnoses the status of your HTML title tag, meta description, OGP tags, canonical tag, and more. Use it to improve how your site appears in search results and social media.

Which meta tags can you check?▾

We check title tags, meta description, OGP tags (og:title, og:description, og:image), canonical tags, robots tags, viewport tags, and more.

What happens if meta tags are not set?▾

Missing title tags reduce search result CTR. Missing OGP tags prevent thumbnails from showing on social shares. Canonical tag issues cause duplicate content problems.

What is the optimal title tag length?▾

28-32 characters for Japanese, 50-60 characters for English. Placing key keywords at the beginning improves CTR. Our tool checks character count automatically.

What is the recommended og:image size?▾

1200×630px is recommended. Missing or undersized images cause broken thumbnails on social shares, reducing click-through rates.

Why doesn't my meta description appear in search results?▾

Google sometimes auto-generates descriptions from page content. Writing compelling descriptions of 120-150 characters that match search intent increases adoption rates.

Optimal length for title & meta description — snippet optimisation

Search result snippets are truncated by pixel width, not character count. On desktop, the title display width is roughly 600 px, which corresponds to around 55–65 half-width characters as a rough guide. On mobile, titles tend to get cut even shorter, so placing the most important information near the front matters.

For meta descriptions, around 120 full-width characters is a common desktop guideline. However, Google may rewrite the description based on the query, so your set value is not always shown as-is. Writing a clear, accurate description still helps both click-through rate and AI Overview readiness.

An honest note: The character counts above are display guidelines only — they do not directly affect search ranking. Google may automatically rewrite titles and descriptions based on the query. There is no SEO-perfect length, so focus on writing clearly for the reader.

How to write effective titles & descriptions

What works best varies by page, but the following guidelines apply broadly.

Aspect	Good-example policy
title	Place primary keyword near the front / keep unique per page / append brand name at the end (e.g. CodeQuest.work SEO)
meta description	Summarize the page's answer to search intent / include keywords like 'SEO tips' or 'pricing' naturally / avoid duplicate across pages

3 use cases for meta tag optimisation

Improve snippets to lift click-through rate (CTR)

The title and description shown in search results directly influence click-through rate alongside ranking position. Optimising them is the first lever to drive more organic traffic.

Optimise social appearance alongside OGP & Twitter Card

When a page is shared on social media, its card appearance is controlled by og:title, og:description, and og:image. Reviewing these alongside your meta tags lets you control exactly how the page looks when shared.

AI Overview references meta description for context

Google's AI Overview can reference the meta description to understand the page's topic. Writing a concise, accurate summary helps prepare your content for potential AI citations.