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Quantum Highlighter PRO

Chrome extension by QuantumHammer · Productivity · Workflow

A Chrome extension in Productivity · Workflow with 517 users, barely installed.

Specific sites only: 1 match pattern.

What the developer says, and 4 screenshots

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

Users
517
Rating
5.0 (5 ratings)
Users, last 18 days
+19
Rating, last 30 days
Not watched long enough to say
Version
2026.0905.2
Updated in the store
2026-09-06
Published
2025-08-02
Manifest
V3
Browser access
6 permissions, 1 site pattern

How it has moved

Users
+19 since 01.09
498-519 · 12 readings
2026-09-07: released 2026.0905.2
  1. 2026-09-01498
  2. 2026-09-02505
  3. 2026-09-03512
  4. 2026-09-05505
  5. 2026-09-06508
  6. 2026-09-07510released 2026.0905.2
  7. 2026-09-09501
  8. 2026-09-10509
  9. 2026-09-13516
  10. 2026-09-15519
  11. 2026-09-17517
  12. 2026-09-18517
Rating
unchanged since 01.09
reviewsrating 5.00 · 12 readings
2026-09-07: released 2026.0905.2
  1. 2026-09-01reviews5rating5.00
  2. 2026-09-02reviews5rating5.00
  3. 2026-09-03reviews5rating5.00
  4. 2026-09-05reviews5rating5.00
  5. 2026-09-06reviews5rating5.00
  6. 2026-09-07reviews5rating5.00released 2026.0905.2
  7. 2026-09-09reviews5rating5.00
  8. 2026-09-10reviews5rating5.00
  9. 2026-09-13reviews5rating5.00
  10. 2026-09-15reviews5rating5.00
  11. 2026-09-17reviews5rating5.00
  12. 2026-09-18reviews5rating5.00
Users
+19 since 01.09
498-519 · 12 readings
2026-09-07: released 2026.0905.2
  1. 2026-09-01498
  2. 2026-09-02505
  3. 2026-09-03512
  4. 2026-09-05505
  5. 2026-09-06508
  6. 2026-09-07510released 2026.0905.2
  7. 2026-09-09501
  8. 2026-09-10509
  9. 2026-09-13516
  10. 2026-09-15519
  11. 2026-09-17517
  12. 2026-09-18517
Rating
unchanged since 01.09
reviewsrating 5.00 · 12 readings
2026-09-07: released 2026.0905.2
  1. 2026-09-01reviews5rating5.00
  2. 2026-09-02reviews5rating5.00
  3. 2026-09-03reviews5rating5.00
  4. 2026-09-05reviews5rating5.00
  5. 2026-09-06reviews5rating5.00
  6. 2026-09-07reviews5rating5.00released 2026.0905.2
  7. 2026-09-09reviews5rating5.00
  8. 2026-09-10reviews5rating5.00
  9. 2026-09-13reviews5rating5.00
  10. 2026-09-15reviews5rating5.00
  11. 2026-09-17reviews5rating5.00
  12. 2026-09-18reviews5rating5.00

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

Specific sites only: 1 match pattern.

  • https://www.googleapis.com/*
  • Sign you in with a Google account identity
  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
Show the remaining 3
  • Add items to the right-click menu contextMenus
  • Read site icons favicon
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 2026.0905.2 · Asked for more permissions (7, was 2)

What changed recently

  1. Package size changed
  2. Asked for more permissions (7, was 2)
  3. Released version 2026.0905.2 (was 2025.0802.1)

The publisher

QuantumHammer.

Like this one

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

  1. Annotiq: Web Highlighter & Notes Describes nearly the same job, smaller audience 7 users
  2. Highlight Describes nearly the same job, smaller audience 299 users ★ 4.4
  3. Annotate Describes nearly the same job, smaller audience 7 users
  4. Highlighter Describes nearly the same job, smaller audience 1k users ★ 4.8
  5. Web Highlighter & Note Describes nearly the same job, smaller audience 2 users (last published figure)

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.

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.