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Cefer Extension

Chrome extension by Cefer · Productivity · Communication

  • Established publisher
  • Trader

A Chrome extension in Productivity · Communication with 22 users, barely installed. Audience over the last 30 days: -1.

Specific sites only: 2 match patterns.

What the developer says, and 4 screenshots

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

Users
22 (the store no longer states an audience; this is the last figure it published)
Rating
not rated yet
Users, last 30 days
-1
Version
1.0.0
Updated in the store
2026-03-31
Published
2026-03-31
Manifest
V3
Browser access
6 permissions, 2 site patterns

How it has moved

Users
-1 since 04.10
20-23 · 15 readings
  1. 2026-10-0423
  2. 2026-10-0822
  3. 2026-10-1021
  4. 2026-10-1320
  5. 2026-10-1621
  6. 2026-10-1723
  7. 2026-10-1822
  8. 2026-10-2123
  9. 2026-10-2221
  10. 2026-10-2322
  11. 2026-10-2423
  12. 2026-10-2722
  13. 2026-10-2923
  14. 2026-11-0122
  15. 2026-11-0222
Users
unchanged since 01.09
20-28 · 27 readings
  1. 2026-09-0122
  2. 2026-09-0323
  3. 2026-09-0421
  4. 2026-09-0620
  5. 2026-09-0921
  6. 2026-09-1020
  7. 2026-09-1321
  8. 2026-09-1720
  9. 2026-09-2122
  10. 2026-09-2525
  11. 2026-09-2728
  12. 2026-09-2827
  13. 2026-10-0423
  14. 2026-10-0822
  15. 2026-10-1021
  16. 2026-10-1320
  17. 2026-10-1621
  18. 2026-10-1723
  19. 2026-10-1822
  20. 2026-10-2123
  21. 2026-10-2221
  22. 2026-10-2322
  23. 2026-10-2423
  24. 2026-10-2722
  25. 2026-10-2923
  26. 2026-11-0122
  27. 2026-11-0222

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

Specific sites only: 2 match patterns.

  • https://www.cefer.io/*
  • *://*.linkedin.com/*
  • See the address and title of every tab you have open tabs
  • Run its own code on the pages it can access scripting
  • See when you navigate between pages webNavigation
Show the remaining 3
  • Act on the current tab, but only after you click it activeTab
  • Open a panel beside the page sidePanel
  • 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

Cefer. Listed website: cefer.io.

Like this one

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

  1. Add to.co - Capture prospects as you browse Describes nearly the same job, smaller audience 32 users ★ 5.0
  2. Tocoleads - Prospect from anywhere Describes nearly the same job, smaller audience 17 users
  3. EasyBusiness Describes nearly the same job, smaller audience 198 users
  4. RevDriver by SalesIntel Describes nearly the same job, with an established audience 10k users ★ 4.7
  5. PrimeRole Describes nearly the same job, smaller audience 817 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/okdepgaipkoeakdlgjmpegdohekhebgp"><img src="https://extops.dev/extensions/okdepgaipkoeakdlgjmpegdohekhebgp/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 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built