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JSON-LD Checker – Schema Validator

Chrome extension by 郭小铭 · Productivity · Developer

  • Established publisher

A Chrome extension in Productivity · Developer with 849 users, barely installed. Audience over the last 30 days: -3.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
849
Rating
4.8 (4 ratings)
Users, last 30 days
-3
Rating, last 30 days
Steady over 30 days
Version
2.5.0
Updated in the store
2026-07-29
Published
2025-11-08
Manifest
V3
Browser access
4 permissions

How it has moved

Users
-3 since 28.09
849-888 · 17 readings
  1. 2026-09-28852
  2. 2026-10-05851
  3. 2026-10-08849
  4. 2026-10-09861
  5. 2026-10-10872
  6. 2026-10-11875
  7. 2026-10-13883
  8. 2026-10-16888
  9. 2026-10-17881
  10. 2026-10-18865
  11. 2026-10-19855
  12. 2026-10-21857
  13. 2026-10-22854
  14. 2026-10-23850
  15. 2026-10-24855
  16. 2026-10-25861
  17. 2026-10-28849
Rating
unchanged since 28.09
reviewsrating 4.75 · 17 readings
  1. 2026-09-28reviews4rating4.75
  2. 2026-10-05reviews4rating4.75
  3. 2026-10-08reviews4rating4.75
  4. 2026-10-09reviews4rating4.75
  5. 2026-10-10reviews4rating4.75
  6. 2026-10-11reviews4rating4.75
  7. 2026-10-13reviews4rating4.75
  8. 2026-10-16reviews4rating4.75
  9. 2026-10-17reviews4rating4.75
  10. 2026-10-18reviews4rating4.75
  11. 2026-10-19reviews4rating4.75
  12. 2026-10-21reviews4rating4.75
  13. 2026-10-22reviews4rating4.75
  14. 2026-10-23reviews4rating4.75
  15. 2026-10-24reviews4rating4.75
  16. 2026-10-25reviews4rating4.75
  17. 2026-10-28reviews4rating4.75
Users
-5 since 31.08
839-888 · 31 readings
  1. 2026-08-31854
  2. 2026-09-02859
  3. 2026-09-04850
  4. 2026-09-06845
  5. 2026-09-07839
  6. 2026-09-08841
  7. 2026-09-09849
  8. 2026-09-13853
  9. 2026-09-15859
  10. 2026-09-17860
  11. 2026-09-20848
  12. 2026-09-21849
  13. 2026-09-25848
  14. 2026-09-27847
  15. 2026-09-28852
  16. 2026-10-05851
  17. 2026-10-08849
  18. 2026-10-09861
  19. 2026-10-10872
  20. 2026-10-11875
  21. 2026-10-13883
  22. 2026-10-16888
  23. 2026-10-17881
  24. 2026-10-18865
  25. 2026-10-19855
  26. 2026-10-21857
  27. 2026-10-22854
  28. 2026-10-23850
  29. 2026-10-24855
  30. 2026-10-25861
  31. 2026-10-28849
Rating
+0.08 since 31.08
reviewsrating 4.67-4.75 · 31 readings
  1. 2026-08-31reviews3rating4.67
  2. 2026-09-02reviews3rating4.67
  3. 2026-09-04reviews3rating4.67
  4. 2026-09-06reviews3rating4.67
  5. 2026-09-07reviews3rating4.67
  6. 2026-09-08reviews3rating4.67
  7. 2026-09-09reviews3rating4.67
  8. 2026-09-13reviews3rating4.67
  9. 2026-09-15reviews4rating4.75
  10. 2026-09-17reviews4rating4.75
  11. 2026-09-20reviews4rating4.75
  12. 2026-09-21reviews4rating4.75
  13. 2026-09-25reviews4rating4.75
  14. 2026-09-27reviews4rating4.75
  15. 2026-09-28reviews4rating4.75
  16. 2026-10-05reviews4rating4.75
  17. 2026-10-08reviews4rating4.75
  18. 2026-10-09reviews4rating4.75
  19. 2026-10-10reviews4rating4.75
  20. 2026-10-11reviews4rating4.75
  21. 2026-10-13reviews4rating4.75
  22. 2026-10-16reviews4rating4.75
  23. 2026-10-17reviews4rating4.75
  24. 2026-10-18reviews4rating4.75
  25. 2026-10-19reviews4rating4.75
  26. 2026-10-21reviews4rating4.75
  27. 2026-10-22reviews4rating4.75
  28. 2026-10-23reviews4rating4.75
  29. 2026-10-24reviews4rating4.75
  30. 2026-10-25reviews4rating4.75
  31. 2026-10-28reviews4rating4.75

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Open a panel beside the page sidePanel
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

郭小铭 publishes 10 listings we track, 1k users between them. Listed website: guoxiaoming.com.

  1. Image & Video Download Helper 郭小铭 · Productivity · Tools · published 2025-12-15 428 users
  2. 小红书 VOC 情感分析 郭小铭 · Productivity · Tools · published 2026-02-01 43 users ★ 4.0
  3. AI Bookmark Manager 郭小铭 · Productivity · Tools · published 2025-11-29 31 users
Show 5 more from this publisher
  1. AI SEO Analyzer 郭小铭 · Productivity · Developer · published 2025-12-27 24 users
  2. Fillin — AI Form Filler 郭小铭 · Productivity · Tools · published 2026-08-03 20 users
  3. LLMS.txt Generator 郭小铭 · Productivity · Tools · published 2025-11-15 13 users
  4. Markdown Resume Builder 郭小铭 · Productivity · Tools · published 2025-11-29 6 users
  5. Website Color Palette Extractor 郭小铭 · Productivity · Tools · published 2025-12-05 5 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. Schema Checker - Structured Data, JSON-LD & Microdata Describes nearly the same job, smaller audience 15 users
  2. Schema Inspector — Structured Data & JSON-LD Validator Describes nearly the same job, smaller audience 18 users
  3. Schema Markup Viewer Describes nearly the same job, smaller audience 405 users ★ 4.0
  4. SEOMarkup Structured Data Schema Inspector Describes nearly the same job, smaller audience 4k users ★ 5.0
  5. Schema Markup Validator and Checker by FullSchema Describes nearly the same job, smaller audience 6 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Users and rating on Ext Ops Panel

Markdown

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HTML

<a href="https://extops.dev/extensions/jdddgiebgdijpopfapkocdnnbgkhddln"><img src="https://extops.dev/extensions/jdddgiebgdijpopfapkocdnnbgkhddln/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-28. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built