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LLMO Checker Prototype

Chrome extension by 松下聡太郎（sotaro matsushita） · Productivity · Tools

A Chrome extension in Productivity · Tools with 6 users, barely installed.

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

What the developer says, and 1 screenshot

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

Users
6
Rating
5.0 (1 ratings)
Users, last 17 days
+2
Rating, last 30 days
Not watched long enough to say
Version
0.3.0
Updated in the store
2026-08-26
Published
2026-08-26
Manifest
V3
Browser access
3 permissions, 1 site pattern

How it has moved

Users
+2 since 31.08
4-7 · 9 readings
  1. 2026-08-314
  2. 2026-09-025
  3. 2026-09-046
  4. 2026-09-066
  5. 2026-09-087
  6. 2026-09-106
  7. 2026-09-135
  8. 2026-09-156
  9. 2026-09-166
Rating
unchanged since 31.08
reviewsrating 5.00 · 9 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-08reviews1rating5.00
  6. 2026-09-10reviews1rating5.00
  7. 2026-09-13reviews1rating5.00
  8. 2026-09-15reviews1rating5.00
  9. 2026-09-16reviews1rating5.00
Users
+2 since 31.08
4-7 · 9 readings
  1. 2026-08-314
  2. 2026-09-025
  3. 2026-09-046
  4. 2026-09-066
  5. 2026-09-087
  6. 2026-09-106
  7. 2026-09-135
  8. 2026-09-156
  9. 2026-09-166
Rating
unchanged since 31.08
reviewsrating 5.00 · 9 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-08reviews1rating5.00
  6. 2026-09-10reviews1rating5.00
  7. 2026-09-13reviews1rating5.00
  8. 2026-09-15reviews1rating5.00
  9. 2026-09-16reviews1rating5.00

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

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

  • See the address and title of every tab you have open tabs
  • 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

松下聡太郎（sotaro matsushita） publishes 2 listings we track, 9 users between them. Listed website: sotaro-matsushita.com.

  1. Wikidata Entity Checker 松下聡太郎（sotaro matsushita） · Productivity · Tools · published 2026-08-24 3 users ★ 5.0

Like this one

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

  1. LLM Viewer — See your page as an AI crawler Describes nearly the same job, smaller audience 394 users ★ 5.0
  2. AI Crawlability Checker — by Shopify App Club Describes nearly the same job, smaller audience 5 users
  3. LLM Crawler Validator - AEO & AI SEO Tool Describes nearly the same job, smaller audience 19 users
  4. AI対応チェッカー by 3PT｜LLMO・AI検索対策 Describes nearly the same job, smaller audience 5 users
  5. llms.txt Checker by Am I Visible? Describes nearly the same job, smaller audience 8 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?

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.