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Domain Age Checker Google SERP - Semantic Pen

Chrome extension by David Malla · Productivity · Workflow

  • Featured
  • Established publisher

A Chrome extension in Productivity · Workflow with 835 users, barely installed. Audience over the last 30 days: -35.

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
835
Rating
4.2 (94 ratings)
Users, last 30 days
-35
Rating, last 30 days
-0.10 in 30 days
Version
2.3
Updated in the store
2026-10-13
Published
2023-04-17
Manifest
V3
Browser access
2 permissions

How it has moved

Users
-35 since 01.10
829-913 · 21 readings
2026-10-13: released 2.3
  1. 2026-10-05888
  2. 2026-10-08884
  3. 2026-10-09873
  4. 2026-10-10872
  5. 2026-10-11864
  6. 2026-10-13863released 2.3
  7. 2026-10-14863
  8. 2026-10-16871
  9. 2026-10-17879
  10. 2026-10-18899
  11. 2026-10-19891
  12. 2026-10-20900
  13. 2026-10-21913
  14. 2026-10-22885
  15. 2026-10-23854
  16. 2026-10-24838
  17. 2026-10-25829
  18. 2026-10-26830
  19. 2026-10-28832
  20. 2026-10-30835
  21. 2026-10-31835
Rating
-0.10 since 01.10
reviewsrating 4.23-4.33 · 21 readings
2026-10-13: released 2.3
  1. 2026-10-05reviews94rating4.33
  2. 2026-10-08reviews94rating4.33
  3. 2026-10-09reviews94rating4.33
  4. 2026-10-10reviews94rating4.33
  5. 2026-10-11reviews94rating4.33
  6. 2026-10-13reviews94rating4.33released 2.3
  7. 2026-10-14reviews94rating4.23
  8. 2026-10-16reviews94rating4.23
  9. 2026-10-17reviews94rating4.23
  10. 2026-10-18reviews94rating4.23
  11. 2026-10-19reviews94rating4.23
  12. 2026-10-20reviews94rating4.23
  13. 2026-10-21reviews94rating4.23
  14. 2026-10-22reviews94rating4.23
  15. 2026-10-23reviews94rating4.23
  16. 2026-10-24reviews94rating4.23
  17. 2026-10-25reviews94rating4.23
  18. 2026-10-26reviews94rating4.23
  19. 2026-10-28reviews94rating4.23
  20. 2026-10-30reviews94rating4.23
  21. 2026-10-31reviews94rating4.23
Users
-6 since 31.08
829-913 · 35 readings
2026-10-13: released 2.3
  1. 2026-08-31841
  2. 2026-09-03853
  3. 2026-09-05847
  4. 2026-09-06855
  5. 2026-09-07848
  6. 2026-09-09858
  7. 2026-09-13857
  8. 2026-09-15849
  9. 2026-09-17871
  10. 2026-09-20884
  11. 2026-09-21893
  12. 2026-09-25887
  13. 2026-09-26874
  14. 2026-09-28870
  15. 2026-10-05888
  16. 2026-10-08884
  17. 2026-10-09873
  18. 2026-10-10872
  19. 2026-10-11864
  20. 2026-10-13863released 2.3
  21. 2026-10-14863
  22. 2026-10-16871
  23. 2026-10-17879
  24. 2026-10-18899
  25. 2026-10-19891
  26. 2026-10-20900
  27. 2026-10-21913
  28. 2026-10-22885
  29. 2026-10-23854
  30. 2026-10-24838
  31. 2026-10-25829
  32. 2026-10-26830
  33. 2026-10-28832
  34. 2026-10-30835
  35. 2026-10-31835
Rating
-0.10 since 31.08
reviewsrating 4.23-4.33 · 35 readings
2026-10-13: released 2.3
  1. 2026-08-31reviews94rating4.33
  2. 2026-09-03reviews94rating4.33
  3. 2026-09-05reviews94rating4.33
  4. 2026-09-06reviews94rating4.33
  5. 2026-09-07reviews94rating4.33
  6. 2026-09-09reviews94rating4.33
  7. 2026-09-13reviews94rating4.33
  8. 2026-09-15reviews94rating4.33
  9. 2026-09-17reviews94rating4.33
  10. 2026-09-20reviews94rating4.33
  11. 2026-09-21reviews94rating4.33
  12. 2026-09-25reviews94rating4.33
  13. 2026-09-26reviews94rating4.33
  14. 2026-09-28reviews94rating4.33
  15. 2026-10-05reviews94rating4.33
  16. 2026-10-08reviews94rating4.33
  17. 2026-10-09reviews94rating4.33
  18. 2026-10-10reviews94rating4.33
  19. 2026-10-11reviews94rating4.33
  20. 2026-10-13reviews94rating4.33released 2.3
  21. 2026-10-14reviews94rating4.23
  22. 2026-10-16reviews94rating4.23
  23. 2026-10-17reviews94rating4.23
  24. 2026-10-18reviews94rating4.23
  25. 2026-10-19reviews94rating4.23
  26. 2026-10-20reviews94rating4.23
  27. 2026-10-21reviews94rating4.23
  28. 2026-10-22reviews94rating4.23
  29. 2026-10-23reviews94rating4.23
  30. 2026-10-24reviews94rating4.23
  31. 2026-10-25reviews94rating4.23
  32. 2026-10-26reviews94rating4.23
  33. 2026-10-28reviews94rating4.23
  34. 2026-10-30reviews94rating4.23
  35. 2026-10-31reviews94rating4.23

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.

  • Act on the current tab, but only after you click it activeTab
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 2.3 · Asked for fewer permissions (2, was 3) (changed: pages it runs its code on, browser permissions)

What changed recently

  1. Package size changed
  2. Asked for fewer permissions (2, was 3) (changed: pages it runs its code on, browser permissions)
  3. Released version 2.3 (was 2.2)

The publisher

David Malla publishes 10 listings we track, 14k users between them. Listed website: semanticpen.com.

  1. Domain Authority Checker David Malla · Productivity · Tools · published 2024-12-21 10k users ★ 4.3
  2. Domain Age Checker by Semantic Pen David Malla · Productivity · Developer · published 2024-10-04 1k users ★ 4.8
  3. Domain Authority Checker - Google SERP David Malla · Productivity · Tools · published 2024-12-21 1k users ★ 3.8
Show 5 more from this publisher
  1. SEO Toolbar: Domain Authority, Traffic & Keywords - Semantic Pen David Malla · Productivity · Tools · published 2024-09-21 436 users ★ 5.0
  2. Open Multiple URLs David Malla · Productivity · Workflow · published 2024-11-11 130 users ★ 5.0
  3. Keyword Auto Complete Magic David Malla · Productivity · Tools · published 2024-11-11 129 users ★ 5.0
  4. Comment Whisper - AI Comment Generator for Twitter (X) & LinkedIn David Malla · Productivity · Tools · published 2025-03-11 70 users ★ 4.6
  5. YouTube Transcript: AI Summary & Chat David Malla · Productivity · Workflow · published 2026-09-13 57 users ★ 5.0

Like this one

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

  1. Karma Domains | Domain Age, SEO Checks & SERP Helper Describes nearly the same job, smaller audience 75 users ★ 5.0
  2. Domain Age Checker - SERP Describes nearly the same job, smaller audience 49 users ★ 5.0
  3. Domain Age & Metrics - Keyword Cobra Describes nearly the same job, smaller audience 26 users ★ 5.0
  4. DualPilot SEO Companion Describes nearly the same job, smaller audience 3 users
  5. Cuik SEO Extension Describes nearly the same job, smaller audience 1k 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

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-30. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built