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Kortex Notebook: Best Gemini NotebookLM Toolkit

Chrome extension by yakshgandhi1 · Productivity · Tools

  • Featured
  • Established publisher

A Chrome extension in Productivity · Tools with 100 000 users, a widely installed extension.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 5 screenshots

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

Users
100 000
Rating
4.7 (368 ratings)
Users, last 15 days
unchanged
Rating, last 30 days
Not watched long enough to say
Version
2.3.3
Updated in the store
2026-08-14
Published
2025-08-16
Manifest
V3
Browser access
9 permissions, 30 site patterns

How it has moved

Users
unchanged since 01.09
100k · 5 readings
  1. 2026-09-01100k
  2. 2026-09-07100k
  3. 2026-09-09100k
  4. 2026-09-10100k
  5. 2026-09-15100k
Rating
-0.006 since 01.09
reviewsrating 4.719-4.727 · 5 readings
  1. 2026-09-01reviews365rating4.726
  2. 2026-09-07reviews366rating4.727
  3. 2026-09-09reviews367rating4.719
  4. 2026-09-10reviews368rating4.720
  5. 2026-09-15reviews368rating4.720
Users
unchanged since 01.09
100k · 5 readings
  1. 2026-09-01100k
  2. 2026-09-07100k
  3. 2026-09-09100k
  4. 2026-09-10100k
  5. 2026-09-15100k
Rating
-0.006 since 01.09
reviewsrating 4.719-4.727 · 5 readings
  1. 2026-09-01reviews365rating4.726
  2. 2026-09-07reviews366rating4.727
  3. 2026-09-09reviews367rating4.719
  4. 2026-09-10reviews368rating4.720
  5. 2026-09-15reviews368rating4.720

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

Every site you visit. This extension can read and change the content of any page you open.

  • Attach to pages the way developer tools do debugger
  • Manage your downloads downloads
  • Sign you in with a Google account identity
Show the remaining 6
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
  • Add items to the right-click menu contextMenus
  • Store data in your browser storage
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

What changed recently

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

The publisher

yakshgandhi1 publishes 2 listings we track, 100k users between them. Listed website: kortex-notebooklm.com.

  1. Lexi yakshgandhi1 · Productivity · Education · published 2025-07-31 11 users ★ 5.0

Like this one

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

  1. Notebooklm Web Importer Describes nearly the same job, with an established audience 10k users ★ 4.9
  2. My NotebookLM Describes nearly the same job, smaller audience 408 users
  3. NotebookLM Web Importer for Gemini Notebook™ – One Click Import Describes nearly the same job, smaller audience 32 users
  4. NoteFlow - Gemini NoteBook Extension Describes nearly the same job, smaller audience 40 users ★ 5.0
  5. NotebookLM : All in One Productivity Tool Describes nearly the same job, smaller audience 218 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.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

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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.