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Subdomain Recon - Certificate Transparency Lookup

Chrome extension by GTS · Productivity · Developer

  • Trader

A Chrome extension in Productivity · Developer with 14 users, barely installed.

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

What the developer says, and 4 screenshots

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

Users
14
Rating
not rated yet
Users, last 15 days
+3
Version
1.0.4
Updated in the store
2026-04-28
Published
2026-04-28
Manifest
V3
Browser access
3 permissions

How it has moved

Users
+3 since 01.09
11-14 · 7 readings
  1. 2026-09-0111
  2. 2026-09-0213
  3. 2026-09-0612
  4. 2026-09-0712
  5. 2026-09-0912
  6. 2026-09-1313
  7. 2026-09-1514
Users
+3 since 01.09
11-14 · 7 readings
  1. 2026-09-0111
  2. 2026-09-0213
  3. 2026-09-0612
  4. 2026-09-0712
  5. 2026-09-0912
  6. 2026-09-1313
  7. 2026-09-1514

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once 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
  • Add items to the right-click menu contextMenus
  • 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

GTS publishes 19 listings we track, 321 users between them. Listed website: cloudgeeks.com.au.

  1. AI Prompt Library - Prompt Manager for ChatGPT & Claude GTS · Productivity · Tools · published 2026-04-25 45 users (last published figure)
  2. Origin IP Lookup GTS · Productivity · Developer · published 2026-04-16 40 users
  3. GitHub Repo Analyzer - Repo Intelligence GTS · Productivity · Workflow · published 2026-05-04 32 users
Show 5 more from this publisher
  1. Mobile Viewport Preview - iPhone, Pixel, iPad GTS · Productivity · Developer · published 2026-04-25 28 users
  2. Page Data Extractor GTS · Productivity · Developer · published 2026-04-07 28 users
  3. API Inspector - XHR & Fetch Debugger GTS · Productivity · Developer · published 2026-05-05 27 users
  4. Tech Stack Detector - Technology Profiler GTS · Productivity · Developer · published 2026-04-07 17 users
  5. JWT & OAuth Inspector GTS · Productivity · Developer · published 2026-04-25 17 users

Like this one

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

  1. Slash Mark - Subdomain Finder Describes nearly the same job, smaller audience 14 users
  2. Subdomain Finder - Find Hidden Subdomains Describes nearly the same job, smaller audience 519 users ★ 5.0
  3. Subdomain Finder Professional Describes nearly the same job, smaller audience 19 users
  4. digga Domain Lookup Describes nearly the same job, smaller audience 73 users ★ 5.0
  5. Domain Tracker Describes nearly the same job, smaller audience 10 users

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.

Is this your extension?

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See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.