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Best alternatives to Fast Schema Markup Checker - By Vryse SEO (2026)

10 Chrome extensions that do a similar job to Fast Schema Markup Checker, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.

Fast Schema Markup Checker: reviews, users and permissionsBest Tools extensions

Fast Schema Markup Checker - By Vryse SEO today

≈10K users4.1★ from 21 ratingsUpdated 5 weeks ago6 permissions

Fast Schema Markup Checker alternatives, compared

  1. 1

    SEOMarkup Structured Data Schema Inspector

    View and analyze JSON-LD structured data on any webpage. Built for SEO professionals, web developers, and data analysts.

    ≈4K users5.0★ from 9 ratingsUpdated 6 months ago2 permissions
    • About 2.5× fewer users than Fast Schema Markup Checker
    • Updated less recently
    • Asks for fewer permissions (2 vs 6)
    SEOMarkup Structured Data Schema Inspector alternativesCompare side by side
  2. 2

    Schema Markup Validator & Generator

    Instantly validate, visualize, and generate Schema.org structured data for any webpage

    ≈1K users4.7★ from 84 ratingsUpdated 9 months ago8 permissions
    • About 10× fewer users than Fast Schema Markup Checker
    • Rated 0.6 stars higher
    • Updated less recently
    • Asks for more permissions (8 vs 6)
    • Listed under Developer Tools
    Schema Markup Validator & Generator alternativesCompare side by side
  3. 3

    Schema Markup Extractor

    Extracts, validates, and recommends schema.org structured data for SEO

    ≈1K users5.0★ from 3 ratingsUpdated 3 months ago4 permissions
    • About 10× fewer users than Fast Schema Markup Checker
    • Asks for fewer permissions (4 vs 6)
    Schema Markup Extractor alternativesCompare side by side
  4. 4

    On Page SEO Checker

    Install On Page SEO Checker to run website analyzer, perform SEO audit, get SEO checklist report, and boost search engine rankings.

    ≈3K users5.0★ from 15 ratingsUpdated 14 months ago6 permissions
    • About 3.3× fewer users than Fast Schema Markup Checker
    • Updated less recently
    • Listed under Developer Tools
    On Page SEO Checker alternativesCompare side by side
  5. 5

    SEOquake: On-Page SEO Checker

    Run SEO audits, check technical issues, analyze links and keyword density, and see Semrush metrics as you browse and search.

    ≈1M users3.6★ from 2.6K ratingsUpdated 5 days ago5 permissions
    • About 100× more users than Fast Schema Markup Checker
    • Rated 0.6 stars lower
    • Asks for fewer permissions (5 vs 6)
    • Listed under Developer Tools
    SEOquake alternativesCompare side by side
  6. 6

    SEO Checker by Sekhlo

    Analyze on-page SEO, technical signals, schema, performance, links, SSL, and AI-readiness. Optional APIs add DA/PA and AI tips.

    ≈1K users4.7★ from 14 ratingsUpdated 7 months ago57 permissions
    • About 10× fewer users than Fast Schema Markup Checker
    • Updated less recently
    • Asks for more permissions (57 vs 6)
    • Listed under Developer Tools
    SEO Checker by Sekhlo alternativesCompare side by side
  7. 7

    SEO Checker

    Crawl any website and audit its SEO, AI readiness, speed, security and accessibility, with an AI summary of what to fix first.

    ≈9K users4.7★ from 15 ratingsUpdated 7 weeks ago4 permissions
    • A similar number of users to Fast Schema Markup Checker
    • Asks for fewer permissions (4 vs 6)
    SEO Checker alternativesCompare side by side
  8. 8

    Website SEO Checker

    Get free on-page SEO report by 100+ parameters with the best website SEO checker

    ≈100K users4.7★ from 224 ratingsUpdated 8 months ago3 permissions
    • About 10× more users than Fast Schema Markup Checker
    • Rated 0.5 stars higher
    • Updated less recently
    • Asks for fewer permissions (3 vs 6)
    • Listed under Developer Tools
    Website SEO Checker alternativesCompare side by side
  9. 9

    Serpstat Website SEO Checker

    Instantly check your website's SEO, analyze competitors and get advantage of powerful search analytics in one place.

    ≈30K users4.4★ from 192 ratingsNot updated for 2+ years4 permissions
    • About 3.0× more users than Fast Schema Markup Checker
    • Rated 0.3 stars higher
    • Updated less recently
    • Asks for fewer permissions (4 vs 6)
    • Listed under Workflow & Planning
    Serpstat Website SEO Checker alternativesCompare side by side
  10. 10

    SEO / AEO / GEO Checker by PPCBlogPro

    Check SEO, AEO, GEO, and AI search readiness signals directly on the current web page.

    ≈7K users3.0★ from 3 ratings3 permissions
    • A similar number of users to Fast Schema Markup Checker
    • Asks for fewer permissions (3 vs 6)
    • Listed under Developer Tools
    SEO / AEO / GEO Checker by PPCBlogPro alternativesCompare side by side

Fast Schema Markup Checker alternatives: questions

What is the best alternative to Fast Schema Markup Checker?

By users, the most popular alternative is SEOquake: On-Page SEO Checker with ≈1M users and a 3.6-star rating. The closest match by what it does is SEOMarkup Structured Data Schema Inspector.

Which Fast Schema Markup Checker alternative has the best rating?

Schema Markup Validator & Generator has the highest rating of these alternatives with 50+ ratings: 4.7 out of 5 from 84 ratings.

Is there a Fast Schema Markup Checker alternative that asks for fewer permissions?

SEOMarkup Structured Data Schema Inspector asks for 2 permissions, against 6 for Fast Schema Markup Checker.

How many alternatives to Fast Schema Markup Checker are there?

We list 10 close alternatives to Fast Schema Markup Checker on the Chrome Web Store, picked by what they do and ranked by how close they are.

Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.