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SchemaCheck — Schema Markup Checker & Open Graph Meta Tag Validator icon

SchemaCheck — Schema Markup Checker & Open Graph Meta Tag Validator

Validate JSON-LD, Microdata & RDFa schema markup, Open Graph, Twitter Cards & meta tags. Google Rich Results checker. Free SEO tool.

Users169Current public install base
Rating5.0Store average score
Reviews1Public review volume
Manifest versionV3Extension platform version
7-day growth+10Net users gained this week
7-day growth rate+6.29%Relative weekly velocity
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SchemaCheck — Schema Markup Checker & Open Graph Meta Tag Validator Media preview

1 assets
Trend

7-day user preview

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User Growth Over Time

1581611651681712026年7月3日2026年7月6日2026年7月9日Latest: 169
Rating trend

7-day rating preview

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30-day rating change

Start
5.00
Latest
5.00
30-day rating change
0.00
4.904.955.005.055.102026年7月3日2026年7月6日2026年7月9日Latest: 5.00
2026年7月3日2026年7月9日
Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthGrowing
+3+1.81%
7-day growthGrowing
+10+6.29%
30-day growthGrowing
+44+35.2%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version1.0.0
ManifestV3
Size210KiB
Languages52Deutsch / English / Filipino +49
Published
Store updated
Last crawled
DeutschEnglishFilipinoIndonesiaKiswahiliMelayuNederlandsTiếng ViệtTürkçecatalàdanskeesti
Overview

Product summary

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SchemaCheck validates structured data, Open Graph tags, Twitter Cards, and meta tags on any webpage — all in one click. Get a complete SEO audit with scores, actionable recommendations, and social media previews.

WHAT SCHEMACHECK ANALYZES

Schema Markup (Structured Data):

- JSON-LD — the format recommended by Google for structured data

- Microdata — itemscope/itemprop attributes used by many e-commerce sites

- RDFa — typeof/property attributes for semantic web markup

Reviews

Recent review snapshot

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Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average5.0Average computed only from synced review bodies
Reviews with text1Synced review bodies
Total ratings / reviews1Chrome Web Store public rating/review count

Store average score: 5.0. Synced review text can be locked or unavailable even when the store shows a public score.

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