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Best alternatives to OpenLink Structured Data Sniffer (2026)

10 Chrome extensions that do a similar job to OpenLink Structured Data Sniffer, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.

OpenLink Structured Data Sniffer: reviews, users and permissionsBest Developer Tools extensions

OpenLink Structured Data Sniffer today

≈7K users4.6★ from 18 ratingsUpdated 15 months ago6 permissions

OpenLink Structured Data Sniffer alternatives, compared

  1. 1

    Schema Builder for Structured Data

    Easily build validated json-ld structured data markup for any webpage. Based on schema.org specification

    ≈40K users3.6★ from 31 ratingsUpdated 21 months ago3 permissions
    • About 5.7× more users than OpenLink Structured Data Sniffer
    • Updated less recently
    • Asks for fewer permissions (3 vs 6)
    Schema Builder for Structured Data alternativesCompare side by side
  2. 2

    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 1.8× fewer users than OpenLink Structured Data Sniffer
    • Updated more recently
    • Asks for fewer permissions (2 vs 6)
    • Listed under Tools
    SEOMarkup Structured Data Schema Inspector alternativesCompare side by side
  3. 3

    Rich Results - Structured Data Test Plugin

    Extension checks the current URL in browser with Google's Rich Results Test Tool

    ≈5K users3.8★ from 13 ratingsUpdated 9 months ago2 permissions
    • A similar number of users to OpenLink Structured Data Sniffer
    • Updated more recently
    • Asks for fewer permissions (2 vs 6)
    • Listed under Tools
    Rich Results alternativesCompare side by side
  4. 4

    JSON-LD Tester – Structured Data & Agent Tools Inspector

    Inspect and test JSON-LD, Schema.org data and agent tools on any website.

    ≈9K users4.8★ from 18 ratingsUpdated 3 weeks ago4 permissions
    • A similar number of users to OpenLink Structured Data Sniffer
    • Updated more recently
    • Asks for fewer permissions (4 vs 6)
    JSON-LD Tester alternativesCompare side by side
  5. 5

    Open Graph Checker

    Preview and check a page's Open Graph metadata — see how it will look when shared and which tags are missing.

    ≈7K users4.4★ from 12 ratingsUpdated 8 weeks ago2 permissions
    • A similar number of users to OpenLink Structured Data Sniffer
    • Updated more recently
    • Asks for fewer permissions (2 vs 6)
    Open Graph Checker alternativesCompare side by side
  6. 6

    Open SEO Stats(Formerly: PageRank Status)

    Shows the web rank and SEO stats for current webpage, quick access to index pages, link stats, security info and more

    ≈200K users4.4★ from 5.8K ratingsNot updated for 2+ years3 permissions
    • About 29× more users than OpenLink Structured Data Sniffer
    • Updated less recently
    • Asks for fewer permissions (3 vs 6)
    Open SEO Stats(Formerly alternativesCompare side by side
  7. 7

    EverBee - Find Best Selling Products on Etsy

    Boost your Etsy sales by revealing best selling products. Improve your Etsy store SEO with high-demand, low-competition keywords.

    ≈200K users4.1★ from 400 ratingsUpdated 7 days ago4 permissions
    • About 29× more users than OpenLink Structured Data Sniffer
    • Updated more recently
    • Asks for fewer permissions (4 vs 6)
    • Listed under Tools
    EverBee alternativesCompare side by side
  8. 8

    Strike Out Nofollow Links

    Strikes out links with rel='nofollow', 'sponsored', and 'ugc' using CSS3 selectors.

    ≈6K users4.2★ from 33 ratingsUpdated 21 months ago1 permissions
    • A similar number of users to OpenLink Structured Data Sniffer
    • Updated less recently
    • Asks for fewer permissions (1 vs 6)
    Strike Out Nofollow Links alternativesCompare side by side
  9. 9

    Rendering Difference Engine

    Identify SEO signals added, removed, or altered in page HTML during JavaScript rendering — without digging into the code.

    ≈2K users5.0★ from 20 ratingsUpdated 14 months ago1 permissions
    • About 3.5× fewer users than OpenLink Structured Data Sniffer
    • Asks for fewer permissions (1 vs 6)
    Rendering Difference Engine alternativesCompare side by side
  10. 10

    SEO META in 1 CLICK

    Displays all meta data and main SEO information for the best SEO

    ≈1M users4.9★ from 1.3K ratingsNot updated for 2+ years2 permissions
    • About 143× more users than OpenLink Structured Data Sniffer
    • Updated less recently
    • Asks for fewer permissions (2 vs 6)
    SEO META in 1 CLICK alternativesCompare side by side

OpenLink Structured Data Sniffer alternatives: questions

What is the best alternative to OpenLink Structured Data Sniffer?

By users, the most popular alternative is SEO META in 1 CLICK with ≈1M users and a 4.9-star rating. The closest match by what it does is Schema Builder for Structured Data.

Which OpenLink Structured Data Sniffer alternative has the best rating?

SEO META in 1 CLICK has the highest rating of these alternatives with 50+ ratings: 4.9 out of 5 from 1.3K ratings.

Is there a OpenLink Structured Data Sniffer alternative that asks for fewer permissions?

Strike Out Nofollow Links asks for 1 permissions, against 6 for OpenLink Structured Data Sniffer.

How many alternatives to OpenLink Structured Data Sniffer are there?

We list 10 close alternatives to OpenLink Structured Data Sniffer 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.