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Keyword Density Checker

Chrome extension by SERPninja.io · Productivity · Tools

  • Featured
  • Established publisher

A Chrome extension in Productivity · Tools with 148 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 3 screenshots

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

Users
148
Rating
5.0 (2 ratings)
Users, last 16 days
+9
Rating, last 30 days
Not watched long enough to say
Version
2.0
Updated in the store
2024-01-04
Published
2023-12-11
Manifest
V3
Browser access
2 permissions

How it has moved

Users
+9 since 01.09
139-148 · 10 readings
  1. 2026-09-01139
  2. 2026-09-02140
  3. 2026-09-04142
  4. 2026-09-05145
  5. 2026-09-07146
  6. 2026-09-08144
  7. 2026-09-09145
  8. 2026-09-10147
  9. 2026-09-13148
  10. 2026-09-16148
Rating
unchanged since 01.09
reviewsrating 5.00 · 10 readings
  1. 2026-09-01reviews2rating5.00
  2. 2026-09-02reviews2rating5.00
  3. 2026-09-04reviews2rating5.00
  4. 2026-09-05reviews2rating5.00
  5. 2026-09-07reviews2rating5.00
  6. 2026-09-08reviews2rating5.00
  7. 2026-09-09reviews2rating5.00
  8. 2026-09-10reviews2rating5.00
  9. 2026-09-13reviews2rating5.00
  10. 2026-09-16reviews2rating5.00
Users
+9 since 01.09
139-148 · 10 readings
  1. 2026-09-01139
  2. 2026-09-02140
  3. 2026-09-04142
  4. 2026-09-05145
  5. 2026-09-07146
  6. 2026-09-08144
  7. 2026-09-09145
  8. 2026-09-10147
  9. 2026-09-13148
  10. 2026-09-16148
Rating
unchanged since 01.09
reviewsrating 5.00 · 10 readings
  1. 2026-09-01reviews2rating5.00
  2. 2026-09-02reviews2rating5.00
  3. 2026-09-04reviews2rating5.00
  4. 2026-09-05reviews2rating5.00
  5. 2026-09-07reviews2rating5.00
  6. 2026-09-08reviews2rating5.00
  7. 2026-09-09reviews2rating5.00
  8. 2026-09-10reviews2rating5.00
  9. 2026-09-13reviews2rating5.00
  10. 2026-09-16reviews2rating5.00

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

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

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab

The full permission history for this extension

What changed recently

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

The publisher

SERPninja.io publishes 2 listings we track, 163 users between them. Listed website: serpninja.io.

  1. Character Counter SEO Tool SERPninja.io · Productivity · Tools · published 2024-01-24 15 users ★ 5.0

Like this one

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

  1. SEO Keyword Density Analyzer Describes nearly the same job, smaller audience 9 users
  2. KeyDen: Keyword Density Checker & SEO Analyzer Describes nearly the same job, smaller audience 12 users ★ 5.0
  3. Keyword Scanner Describes nearly the same job, smaller audience 71 users ★ 5.0
  4. Keyword Explorer Describes nearly the same job, smaller audience 808 users ★ 5.0
  5. Keyword Density Checker Describes nearly the same job, smaller audience 672 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.

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.